21035896

素因数分解:

$2^3\times 7^2\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 46416240

約数和(自身を除く): 25380344

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 103, 196, 206, 392, 412, 521, 721, 824, 1042, 1442, 2084, 2884, 3647, 4168, 5047, 5768, 7294, 10094, 14588, 20188, 25529, 29176, 40376, 51058, 53663, 102116, 107326, 204232, 214652, 375641, 429304, 751282, 1502564, 2629487, 3005128, 5258974, 10517948, 21035896]

約数ペア:

[(1, 21035896), (2, 10517948), (4, 5258974), (7, 3005128), (8, 2629487), (14, 1502564), (28, 751282), (49, 429304), (56, 375641), (98, 214652), (103, 204232), (196, 107326), (206, 102116), (392, 53663), (412, 51058), (521, 40376), (721, 29176), (824, 25529), (1042, 20188), (1442, 14588), (2084, 10094), (2884, 7294), (3647, 5768), (4168, 5047)]