20518456

素因数分解:

$2^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{3079}}^1$

素因数の和:3116

約数の個数: 48

約数和(自身を含む): 47401200

約数和(自身を除く): 26882744

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 49, 56, 68, 98, 119, 136, 196, 238, 392, 476, 833, 952, 1666, 3079, 3332, 6158, 6664, 12316, 21553, 24632, 43106, 52343, 86212, 104686, 150871, 172424, 209372, 301742, 366401, 418744, 603484, 732802, 1206968, 1465604, 2564807, 2931208, 5129614, 10259228, 20518456]

約数ペア:

[(1, 20518456), (2, 10259228), (4, 5129614), (7, 2931208), (8, 2564807), (14, 1465604), (17, 1206968), (28, 732802), (34, 603484), (49, 418744), (56, 366401), (68, 301742), (98, 209372), (119, 172424), (136, 150871), (196, 104686), (238, 86212), (392, 52343), (476, 43106), (833, 24632), (952, 21553), (1666, 12316), (3079, 6664), (3332, 6158)]