21372120

素因数分解:

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

素因数の和:295

約数の個数: 256

約数和(自身を含む): 89164800

約数和(自身を除く): 67792680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 27, 28, 30, 33, 35, 36, 40, 42, 44, 45, 54, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 99, 105, 108, 110, 120, 126, 132, 135, 140, 154, 165, 168, 180, 189, 198, 210, 216, 220, 231, 252, 257, 264, 270, 280, 297, 308, 315, 330, 360, 378, 385, 396, 420, 440, 462, 495, 504, 514, 540, 594, 616, 630, 660, 693, 756, 770, 771, 792, 840, 924, 945, 990, 1028, 1080, 1155, 1188, 1260, 1285, 1320, 1386, 1485, 1512, 1540, 1542, 1799, 1848, 1890, 1980, 2056, 2079, 2310, 2313, 2376, 2520, 2570, 2772, 2827, 2970, 3080, 3084, 3465, 3598, 3780, 3855, 3960, 4158, 4620, 4626, 5140, 5397, 5544, 5654, 5940, 6168, 6930, 6939, 7196, 7560, 7710, 8316, 8481, 8995, 9240, 9252, 10280, 10395, 10794, 11308, 11565, 11880, 13860, 13878, 14135, 14392, 15420, 16191, 16632, 16962, 17990, 18504, 19789, 20790, 21588, 22616, 23130, 25443, 26985, 27720, 27756, 28270, 30840, 32382, 33924, 34695, 35980, 39578, 41580, 42405, 43176, 46260, 48573, 50886, 53970, 55512, 56540, 59367, 64764, 67848, 69390, 71960, 76329, 79156, 80955, 83160, 84810, 92520, 97146, 98945, 101772, 107940, 113080, 118734, 127215, 129528, 138780, 152658, 158312, 161910, 169620, 178101, 194292, 197890, 203544, 215880, 237468, 242865, 254430, 277560, 296835, 305316, 323820, 339240, 356202, 381645, 388584, 395780, 474936, 485730, 508860, 534303, 593670, 610632, 647640, 712404, 763290, 791560, 890505, 971460, 1017720, 1068606, 1187340, 1424808, 1526580, 1781010, 1942920, 2137212, 2374680, 2671515, 3053160, 3562020, 4274424, 5343030, 7124040, 10686060, 21372120]

約数ペア:

[(1, 21372120), (2, 10686060), (3, 7124040), (4, 5343030), (5, 4274424), (6, 3562020), (7, 3053160), (8, 2671515), (9, 2374680), (10, 2137212), (11, 1942920), (12, 1781010), (14, 1526580), (15, 1424808), (18, 1187340), (20, 1068606), (21, 1017720), (22, 971460), (24, 890505), (27, 791560), (28, 763290), (30, 712404), (33, 647640), (35, 610632), (36, 593670), (40, 534303), (42, 508860), (44, 485730), (45, 474936), (54, 395780), (55, 388584), (56, 381645), (60, 356202), (63, 339240), (66, 323820), (70, 305316), (72, 296835), (77, 277560), (84, 254430), (88, 242865), (90, 237468), (99, 215880), (105, 203544), (108, 197890), (110, 194292), (120, 178101), (126, 169620), (132, 161910), (135, 158312), (140, 152658), (154, 138780), (165, 129528), (168, 127215), (180, 118734), (189, 113080), (198, 107940), (210, 101772), (216, 98945), (220, 97146), (231, 92520), (252, 84810), (257, 83160), (264, 80955), (270, 79156), (280, 76329), (297, 71960), (308, 69390), (315, 67848), (330, 64764), (360, 59367), (378, 56540), (385, 55512), (396, 53970), (420, 50886), (440, 48573), (462, 46260), (495, 43176), (504, 42405), (514, 41580), (540, 39578), (594, 35980), (616, 34695), (630, 33924), (660, 32382), (693, 30840), (756, 28270), (770, 27756), (771, 27720), (792, 26985), (840, 25443), (924, 23130), (945, 22616), (990, 21588), (1028, 20790), (1080, 19789), (1155, 18504), (1188, 17990), (1260, 16962), (1285, 16632), (1320, 16191), (1386, 15420), (1485, 14392), (1512, 14135), (1540, 13878), (1542, 13860), (1799, 11880), (1848, 11565), (1890, 11308), (1980, 10794), (2056, 10395), (2079, 10280), (2310, 9252), (2313, 9240), (2376, 8995), (2520, 8481), (2570, 8316), (2772, 7710), (2827, 7560), (2970, 7196), (3080, 6939), (3084, 6930), (3465, 6168), (3598, 5940), (3780, 5654), (3855, 5544), (3960, 5397), (4158, 5140), (4620, 4626)]