20137960

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{2089}}^1$

素因数の和:2341

約数の個数: 32

約数和(自身を含む): 45520200

約数和(自身を除く): 25382240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2089, 2410, 4178, 4820, 8356, 9640, 10445, 16712, 20890, 41780, 83560, 503449, 1006898, 2013796, 2517245, 4027592, 5034490, 10068980, 20137960]

約数ペア:

[(1, 20137960), (2, 10068980), (4, 5034490), (5, 4027592), (8, 2517245), (10, 2013796), (20, 1006898), (40, 503449), (241, 83560), (482, 41780), (964, 20890), (1205, 16712), (1928, 10445), (2089, 9640), (2410, 8356), (4178, 4820)]