20482520

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{5279}}^1$

素因数の和:5387

約数の個数: 32

約数和(自身を含む): 46569600

約数和(自身を除く): 26087080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 5279, 10558, 21116, 26395, 42232, 52790, 105580, 211160, 512063, 1024126, 2048252, 2560315, 4096504, 5120630, 10241260, 20482520]

約数ペア:

[(1, 20482520), (2, 10241260), (4, 5120630), (5, 4096504), (8, 2560315), (10, 2048252), (20, 1024126), (40, 512063), (97, 211160), (194, 105580), (388, 52790), (485, 42232), (776, 26395), (970, 21116), (1940, 10558), (3880, 5279)]