25728580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{21089}}^1$

素因数の和:21159

約数の個数: 24

約数和(自身を含む): 54918360

約数和(自身を除く): 29189780

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 21089, 42178, 84356, 105445, 210890, 421780, 1286429, 2572858, 5145716, 6432145, 12864290, 25728580]

約数ペア:

[(1, 25728580), (2, 12864290), (4, 6432145), (5, 5145716), (10, 2572858), (20, 1286429), (61, 421780), (122, 210890), (244, 105445), (305, 84356), (610, 42178), (1220, 21089)]