21211580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4799}}^1$

素因数の和:4838

約数の個数: 48

約数和(自身を含む): 50803200

約数和(自身を除く): 29591620

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4799, 9598, 19196, 23995, 47990, 62387, 81583, 95980, 124774, 163166, 249548, 311935, 326332, 407915, 623870, 815830, 1060579, 1247740, 1631660, 2121158, 4242316, 5302895, 10605790, 21211580]

約数ペア:

[(1, 21211580), (2, 10605790), (4, 5302895), (5, 4242316), (10, 2121158), (13, 1631660), (17, 1247740), (20, 1060579), (26, 815830), (34, 623870), (52, 407915), (65, 326332), (68, 311935), (85, 249548), (130, 163166), (170, 124774), (221, 95980), (260, 81583), (340, 62387), (442, 47990), (884, 23995), (1105, 19196), (2210, 9598), (4420, 4799)]