21611380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{5323}}^1$

素因数の和:5368

約数の個数: 48

約数和(自身を含む): 53665920

約数和(自身を除く): 32054540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 5323, 10646, 21292, 26615, 37261, 53230, 74522, 106460, 149044, 154367, 186305, 308734, 372610, 617468, 745220, 771835, 1080569, 1543670, 2161138, 3087340, 4322276, 5402845, 10805690, 21611380]

約数ペア:

[(1, 21611380), (2, 10805690), (4, 5402845), (5, 4322276), (7, 3087340), (10, 2161138), (14, 1543670), (20, 1080569), (28, 771835), (29, 745220), (35, 617468), (58, 372610), (70, 308734), (116, 186305), (140, 154367), (145, 149044), (203, 106460), (290, 74522), (406, 53230), (580, 37261), (812, 26615), (1015, 21292), (2030, 10646), (4060, 5323)]