12956840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24917}}^1$

素因数の和:24941

約数の個数: 32

約数和(自身を含む): 31396680

約数和(自身を除く): 18439840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 24917, 49834, 99668, 124585, 199336, 249170, 323921, 498340, 647842, 996680, 1295684, 1619605, 2591368, 3239210, 6478420, 12956840]

約数ペア:

[(1, 12956840), (2, 6478420), (4, 3239210), (5, 2591368), (8, 1619605), (10, 1295684), (13, 996680), (20, 647842), (26, 498340), (40, 323921), (52, 249170), (65, 199336), (104, 124585), (130, 99668), (260, 49834), (520, 24917)]