21537496

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{457}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 41714640

約数和(自身を除く): 20177144

約数列:

[1, 2, 4, 8, 43, 86, 137, 172, 274, 344, 457, 548, 914, 1096, 1828, 3656, 5891, 11782, 19651, 23564, 39302, 47128, 62609, 78604, 125218, 157208, 250436, 500872, 2692187, 5384374, 10768748, 21537496]

約数ペア:

[(1, 21537496), (2, 10768748), (4, 5384374), (8, 2692187), (43, 500872), (86, 250436), (137, 157208), (172, 125218), (274, 78604), (344, 62609), (457, 47128), (548, 39302), (914, 23564), (1096, 19651), (1828, 11782), (3656, 5891)]