21908571

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{521}}^1$

素因数の和:762

約数の個数: 16

約数和(自身を含む): 29766528

約数和(自身を除く): 7857957

約数列:

[1, 3, 107, 131, 321, 393, 521, 1563, 14017, 42051, 55747, 68251, 167241, 204753, 7302857, 21908571]

約数ペア:

[(1, 21908571), (3, 7302857), (107, 204753), (131, 167241), (321, 68251), (393, 55747), (521, 42051), (1563, 14017)]