28556840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54917}}^1$

素因数の和:54941

約数の個数: 32

約数和(自身を含む): 69196680

約数和(自身を除く): 40639840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54917, 109834, 219668, 274585, 439336, 549170, 713921, 1098340, 1427842, 2196680, 2855684, 3569605, 5711368, 7139210, 14278420, 28556840]

約数ペア:

[(1, 28556840), (2, 14278420), (4, 7139210), (5, 5711368), (8, 3569605), (10, 2855684), (13, 2196680), (20, 1427842), (26, 1098340), (40, 713921), (52, 549170), (65, 439336), (104, 274585), (130, 219668), (260, 109834), (520, 54917)]