18415340

素因数分解:

$2^2\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4129}}^1$

素因数の和:4361

約数の個数: 24

約数和(自身を含む): 38855040

約数和(自身を除く): 20439700

約数列:

[1, 2, 4, 5, 10, 20, 223, 446, 892, 1115, 2230, 4129, 4460, 8258, 16516, 20645, 41290, 82580, 920767, 1841534, 3683068, 4603835, 9207670, 18415340]

約数ペア:

[(1, 18415340), (2, 9207670), (4, 4603835), (5, 3683068), (10, 1841534), (20, 920767), (223, 82580), (446, 41290), (892, 20645), (1115, 16516), (2230, 8258), (4129, 4460)]