20368400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3917}}^1$

素因数の和:3948

約数の個数: 60

約数和(自身を含む): 52712772

約数和(自身を除く): 32344372

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3917, 5200, 7834, 15668, 19585, 31336, 39170, 50921, 62672, 78340, 97925, 101842, 156680, 195850, 203684, 254605, 313360, 391700, 407368, 509210, 783400, 814736, 1018420, 1273025, 1566800, 2036840, 2546050, 4073680, 5092100, 10184200, 20368400]

約数ペア:

[(1, 20368400), (2, 10184200), (4, 5092100), (5, 4073680), (8, 2546050), (10, 2036840), (13, 1566800), (16, 1273025), (20, 1018420), (25, 814736), (26, 783400), (40, 509210), (50, 407368), (52, 391700), (65, 313360), (80, 254605), (100, 203684), (104, 195850), (130, 156680), (200, 101842), (208, 97925), (260, 78340), (325, 62672), (400, 50921), (520, 39170), (650, 31336), (1040, 19585), (1300, 15668), (2600, 7834), (3917, 5200)]