20781035

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{7129}}^1$

素因数の和:7198

約数の個数: 16

約数和(自身を含む): 27721440

約数和(自身を除く): 6940405

約数列:

[1, 5, 11, 53, 55, 265, 583, 2915, 7129, 35645, 78419, 377837, 392095, 1889185, 4156207, 20781035]

約数ペア:

[(1, 20781035), (5, 4156207), (11, 1889185), (53, 392095), (55, 377837), (265, 78419), (583, 35645), (2915, 7129)]