390897980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{16301}}^1$

素因数の和:16430

約数の個数: 48

約数和(自身を含む): 903782880

約数和(自身を除く): 512884900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 1090, 1199, 2180, 2398, 4796, 5995, 11990, 16301, 23980, 32602, 65204, 81505, 163010, 179311, 326020, 358622, 717244, 896555, 1776809, 1793110, 3553618, 3586220, 7107236, 8884045, 17768090, 19544899, 35536180, 39089798, 78179596, 97724495, 195448990, 390897980]

約数ペア:

[(1, 390897980), (2, 195448990), (4, 97724495), (5, 78179596), (10, 39089798), (11, 35536180), (20, 19544899), (22, 17768090), (44, 8884045), (55, 7107236), (109, 3586220), (110, 3553618), (218, 1793110), (220, 1776809), (436, 896555), (545, 717244), (1090, 358622), (1199, 326020), (2180, 179311), (2398, 163010), (4796, 81505), (5995, 65204), (11990, 32602), (16301, 23980)]