87454980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1249}}^1$

素因数の和:1653

約数の個数: 72

約数和(自身を含む): 266175000

約数和(自身を除く): 178720020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 389, 778, 1167, 1249, 1556, 1945, 2334, 2498, 3501, 3747, 3890, 4668, 4996, 5835, 6245, 7002, 7494, 7780, 11241, 11670, 12490, 14004, 14988, 17505, 18735, 22482, 23340, 24980, 35010, 37470, 44964, 56205, 70020, 74940, 112410, 224820, 485861, 971722, 1457583, 1943444, 2429305, 2915166, 4372749, 4858610, 5830332, 7287915, 8745498, 9717220, 14575830, 17490996, 21863745, 29151660, 43727490, 87454980]

約数ペア:

[(1, 87454980), (2, 43727490), (3, 29151660), (4, 21863745), (5, 17490996), (6, 14575830), (9, 9717220), (10, 8745498), (12, 7287915), (15, 5830332), (18, 4858610), (20, 4372749), (30, 2915166), (36, 2429305), (45, 1943444), (60, 1457583), (90, 971722), (180, 485861), (389, 224820), (778, 112410), (1167, 74940), (1249, 70020), (1556, 56205), (1945, 44964), (2334, 37470), (2498, 35010), (3501, 24980), (3747, 23340), (3890, 22482), (4668, 18735), (4996, 17505), (5835, 14988), (6245, 14004), (7002, 12490), (7494, 11670), (7780, 11241)]