16872820

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 19818380

約数列:

[1, 2, 4, 5, 10, 20, 59, 79, 118, 158, 181, 236, 295, 316, 362, 395, 590, 724, 790, 905, 1180, 1580, 1810, 3620, 4661, 9322, 10679, 14299, 18644, 21358, 23305, 28598, 42716, 46610, 53395, 57196, 71495, 93220, 106790, 142990, 213580, 285980, 843641, 1687282, 3374564, 4218205, 8436410, 16872820]

約数ペア:

[(1, 16872820), (2, 8436410), (4, 4218205), (5, 3374564), (10, 1687282), (20, 843641), (59, 285980), (79, 213580), (118, 142990), (158, 106790), (181, 93220), (236, 71495), (295, 57196), (316, 53395), (362, 46610), (395, 42716), (590, 28598), (724, 23305), (790, 21358), (905, 18644), (1180, 14299), (1580, 10679), (1810, 9322), (3620, 4661)]