78720460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 213966144

約数和(自身を除く): 135245684

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 37, 49, 52, 65, 70, 74, 91, 98, 130, 140, 148, 167, 182, 185, 196, 245, 259, 260, 334, 364, 370, 455, 481, 490, 518, 637, 668, 740, 835, 910, 962, 980, 1036, 1169, 1274, 1295, 1670, 1813, 1820, 1924, 2171, 2338, 2405, 2548, 2590, 3185, 3340, 3367, 3626, 4342, 4676, 4810, 5180, 5845, 6179, 6370, 6734, 7252, 8183, 8684, 9065, 9620, 10855, 11690, 12358, 12740, 13468, 15197, 16366, 16835, 18130, 21710, 23380, 23569, 24716, 30394, 30895, 32732, 33670, 36260, 40915, 43253, 43420, 47138, 60788, 61790, 67340, 75985, 80327, 81830, 86506, 94276, 106379, 117845, 123580, 151970, 160654, 163660, 173012, 212758, 216265, 235690, 302771, 303940, 321308, 401635, 425516, 432530, 471380, 531895, 562289, 605542, 803270, 865060, 1063790, 1124578, 1211084, 1513855, 1606540, 2127580, 2249156, 2811445, 3027710, 3936023, 5622890, 6055420, 7872046, 11245780, 15744092, 19680115, 39360230, 78720460]

約数ペア:

[(1, 78720460), (2, 39360230), (4, 19680115), (5, 15744092), (7, 11245780), (10, 7872046), (13, 6055420), (14, 5622890), (20, 3936023), (26, 3027710), (28, 2811445), (35, 2249156), (37, 2127580), (49, 1606540), (52, 1513855), (65, 1211084), (70, 1124578), (74, 1063790), (91, 865060), (98, 803270), (130, 605542), (140, 562289), (148, 531895), (167, 471380), (182, 432530), (185, 425516), (196, 401635), (245, 321308), (259, 303940), (260, 302771), (334, 235690), (364, 216265), (370, 212758), (455, 173012), (481, 163660), (490, 160654), (518, 151970), (637, 123580), (668, 117845), (740, 106379), (835, 94276), (910, 86506), (962, 81830), (980, 80327), (1036, 75985), (1169, 67340), (1274, 61790), (1295, 60788), (1670, 47138), (1813, 43420), (1820, 43253), (1924, 40915), (2171, 36260), (2338, 33670), (2405, 32732), (2548, 30895), (2590, 30394), (3185, 24716), (3340, 23569), (3367, 23380), (3626, 21710), (4342, 18130), (4676, 16835), (4810, 16366), (5180, 15197), (5845, 13468), (6179, 12740), (6370, 12358), (6734, 11690), (7252, 10855), (8183, 9620), (8684, 9065)]