21542885

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{419}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10632475

約数列:

[1, 5, 7, 13, 35, 65, 91, 113, 419, 455, 565, 791, 1469, 2095, 2933, 3955, 5447, 7345, 10283, 14665, 27235, 38129, 47347, 51415, 190645, 236735, 331429, 615511, 1657145, 3077555, 4308577, 21542885]

約数ペア:

[(1, 21542885), (5, 4308577), (7, 3077555), (13, 1657145), (35, 615511), (65, 331429), (91, 236735), (113, 190645), (419, 51415), (455, 47347), (565, 38129), (791, 27235), (1469, 14665), (2095, 10283), (2933, 7345), (3955, 5447)]