20150520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12917}}^1$

素因数の和:12944

約数の個数: 64

約数和(自身を含む): 65106720

約数和(自身を除く): 44956200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12917, 25834, 38751, 51668, 64585, 77502, 103336, 129170, 155004, 167921, 193755, 258340, 310008, 335842, 387510, 503763, 516680, 671684, 775020, 839605, 1007526, 1343368, 1550040, 1679210, 2015052, 2518815, 3358420, 4030104, 5037630, 6716840, 10075260, 20150520]

約数ペア:

[(1, 20150520), (2, 10075260), (3, 6716840), (4, 5037630), (5, 4030104), (6, 3358420), (8, 2518815), (10, 2015052), (12, 1679210), (13, 1550040), (15, 1343368), (20, 1007526), (24, 839605), (26, 775020), (30, 671684), (39, 516680), (40, 503763), (52, 387510), (60, 335842), (65, 310008), (78, 258340), (104, 193755), (120, 167921), (130, 155004), (156, 129170), (195, 103336), (260, 77502), (312, 64585), (390, 51668), (520, 38751), (780, 25834), (1560, 12917)]