281399580

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{257}}^1$

素因数の和:369

約数の個数: 288

約数和(自身を含む): 1081866240

約数和(自身を除く): 800466660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 77, 79, 84, 90, 99, 105, 110, 126, 132, 140, 154, 158, 165, 180, 198, 210, 220, 231, 237, 252, 257, 308, 315, 316, 330, 385, 395, 396, 420, 462, 474, 495, 514, 553, 630, 660, 693, 711, 770, 771, 790, 869, 924, 948, 990, 1028, 1106, 1155, 1185, 1260, 1285, 1386, 1422, 1540, 1542, 1580, 1659, 1738, 1799, 1980, 2212, 2310, 2313, 2370, 2570, 2607, 2765, 2772, 2827, 2844, 3084, 3318, 3465, 3476, 3555, 3598, 3855, 4345, 4620, 4626, 4740, 4977, 5140, 5214, 5397, 5530, 5654, 6083, 6636, 6930, 7110, 7196, 7710, 7821, 8295, 8481, 8690, 8995, 9252, 9954, 10428, 10794, 11060, 11308, 11565, 12166, 13035, 13860, 14135, 14220, 15420, 15642, 16191, 16590, 16962, 17380, 17990, 18249, 19789, 19908, 20303, 21588, 23130, 24332, 24885, 25443, 26070, 26985, 28270, 30415, 31284, 32382, 33180, 33924, 35980, 36498, 39105, 39578, 40606, 42405, 46260, 49770, 50886, 52140, 53970, 54747, 56540, 59367, 60830, 60909, 64764, 72996, 78210, 79156, 80955, 81212, 84810, 91245, 98945, 99540, 101515, 101772, 107940, 109494, 118734, 121660, 121818, 127215, 142121, 156420, 161910, 169620, 178101, 182490, 182727, 197890, 203030, 218988, 223333, 237468, 243636, 254430, 273735, 284242, 296835, 304545, 323820, 356202, 364980, 365454, 395780, 406060, 426363, 446666, 508860, 547470, 568484, 593670, 609090, 669999, 710605, 712404, 730908, 852726, 890505, 893332, 913635, 1094940, 1116665, 1187340, 1218180, 1279089, 1339998, 1421210, 1563331, 1705452, 1781010, 1827270, 2009997, 2131815, 2233330, 2558178, 2679996, 2842420, 3126662, 3349995, 3562020, 3654540, 4019994, 4263630, 4466660, 4689993, 5116356, 6253324, 6395445, 6699990, 7816655, 8039988, 8527260, 9379986, 10049985, 12790890, 13399980, 14069979, 15633310, 18759972, 20099970, 23449965, 25581780, 28139958, 31266620, 40199940, 46899930, 56279916, 70349895, 93799860, 140699790, 281399580]

約数ペア:

[(1, 281399580), (2, 140699790), (3, 93799860), (4, 70349895), (5, 56279916), (6, 46899930), (7, 40199940), (9, 31266620), (10, 28139958), (11, 25581780), (12, 23449965), (14, 20099970), (15, 18759972), (18, 15633310), (20, 14069979), (21, 13399980), (22, 12790890), (28, 10049985), (30, 9379986), (33, 8527260), (35, 8039988), (36, 7816655), (42, 6699990), (44, 6395445), (45, 6253324), (55, 5116356), (60, 4689993), (63, 4466660), (66, 4263630), (70, 4019994), (77, 3654540), (79, 3562020), (84, 3349995), (90, 3126662), (99, 2842420), (105, 2679996), (110, 2558178), (126, 2233330), (132, 2131815), (140, 2009997), (154, 1827270), (158, 1781010), (165, 1705452), (180, 1563331), (198, 1421210), (210, 1339998), (220, 1279089), (231, 1218180), (237, 1187340), (252, 1116665), (257, 1094940), (308, 913635), (315, 893332), (316, 890505), (330, 852726), (385, 730908), (395, 712404), (396, 710605), (420, 669999), (462, 609090), (474, 593670), (495, 568484), (514, 547470), (553, 508860), (630, 446666), (660, 426363), (693, 406060), (711, 395780), (770, 365454), (771, 364980), (790, 356202), (869, 323820), (924, 304545), (948, 296835), (990, 284242), (1028, 273735), (1106, 254430), (1155, 243636), (1185, 237468), (1260, 223333), (1285, 218988), (1386, 203030), (1422, 197890), (1540, 182727), (1542, 182490), (1580, 178101), (1659, 169620), (1738, 161910), (1799, 156420), (1980, 142121), (2212, 127215), (2310, 121818), (2313, 121660), (2370, 118734), (2570, 109494), (2607, 107940), (2765, 101772), (2772, 101515), (2827, 99540), (2844, 98945), (3084, 91245), (3318, 84810), (3465, 81212), (3476, 80955), (3555, 79156), (3598, 78210), (3855, 72996), (4345, 64764), (4620, 60909), (4626, 60830), (4740, 59367), (4977, 56540), (5140, 54747), (5214, 53970), (5397, 52140), (5530, 50886), (5654, 49770), (6083, 46260), (6636, 42405), (6930, 40606), (7110, 39578), (7196, 39105), (7710, 36498), (7821, 35980), (8295, 33924), (8481, 33180), (8690, 32382), (8995, 31284), (9252, 30415), (9954, 28270), (10428, 26985), (10794, 26070), (11060, 25443), (11308, 24885), (11565, 24332), (12166, 23130), (13035, 21588), (13860, 20303), (14135, 19908), (14220, 19789), (15420, 18249), (15642, 17990), (16191, 17380), (16590, 16962)]