21155444

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{457}}^1$

素因数の和:695

約数の個数: 24

約数和(自身を含む): 37856448

約数和(自身を除く): 16701004

約数列:

[1, 2, 4, 71, 142, 163, 284, 326, 457, 652, 914, 1828, 11573, 23146, 32447, 46292, 64894, 74491, 129788, 148982, 297964, 5288861, 10577722, 21155444]

約数ペア:

[(1, 21155444), (2, 10577722), (4, 5288861), (71, 297964), (142, 148982), (163, 129788), (284, 74491), (326, 64894), (457, 46292), (652, 32447), (914, 23146), (1828, 11573)]