31925140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{122789}}^1$

素因数の和:122811

約数の個数: 24

約数和(自身を含む): 72200520

約数和(自身を除く): 40275380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 122789, 245578, 491156, 613945, 1227890, 1596257, 2455780, 3192514, 6385028, 7981285, 15962570, 31925140]

約数ペア:

[(1, 31925140), (2, 15962570), (4, 7981285), (5, 6385028), (10, 3192514), (13, 2455780), (20, 1596257), (26, 1227890), (52, 613945), (65, 491156), (130, 245578), (260, 122789)]