145404920

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{16301}}^1$

素因数の和:16535

約数の個数: 32

約数和(自身を含む): 328648320

約数和(自身を除く): 183243400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 16301, 32602, 65204, 81505, 130408, 163010, 326020, 652040, 3635123, 7270246, 14540492, 18175615, 29080984, 36351230, 72702460, 145404920]

約数ペア:

[(1, 145404920), (2, 72702460), (4, 36351230), (5, 29080984), (8, 18175615), (10, 14540492), (20, 7270246), (40, 3635123), (223, 652040), (446, 326020), (892, 163010), (1115, 130408), (1784, 81505), (2230, 65204), (4460, 32602), (8920, 16301)]