21047684

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12323}}^1$

素因数の和:12395

約数の個数: 24

約数和(自身を含む): 42788928

約数和(自身を除く): 21741244

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12323, 24646, 49292, 86261, 172522, 345044, 751703, 1503406, 3006812, 5261921, 10523842, 21047684]

約数ペア:

[(1, 21047684), (2, 10523842), (4, 5261921), (7, 3006812), (14, 1503406), (28, 751703), (61, 345044), (122, 172522), (244, 86261), (427, 49292), (854, 24646), (1708, 12323)]