21901165

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{30631}}^1$

素因数の和:30660

約数の個数: 16

約数和(自身を含む): 30877056

約数和(自身を除く): 8975891

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 30631, 153155, 336941, 398203, 1684705, 1991015, 4380233, 21901165]

約数ペア:

[(1, 21901165), (5, 4380233), (11, 1991015), (13, 1684705), (55, 398203), (65, 336941), (143, 153155), (715, 30631)]