19405640

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{16729}}^1$

素因数の和:16769

約数の個数: 32

約数和(自身を含む): 45171000

約数和(自身を除く): 25765360

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 16729, 33458, 66916, 83645, 133832, 167290, 334580, 485141, 669160, 970282, 1940564, 2425705, 3881128, 4851410, 9702820, 19405640]

約数ペア:

[(1, 19405640), (2, 9702820), (4, 4851410), (5, 3881128), (8, 2425705), (10, 1940564), (20, 970282), (29, 669160), (40, 485141), (58, 334580), (116, 167290), (145, 133832), (232, 83645), (290, 66916), (580, 33458), (1160, 16729)]