21258490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17569}}^1$

素因数の和:17598

約数の個数: 24

約数和(自身を含む): 42062580

約数和(自身を除く): 20804090

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17569, 35138, 87845, 175690, 193259, 386518, 966295, 1932590, 2125849, 4251698, 10629245, 21258490]

約数ペア:

[(1, 21258490), (2, 10629245), (5, 4251698), (10, 2125849), (11, 1932590), (22, 966295), (55, 386518), (110, 193259), (121, 175690), (242, 87845), (605, 35138), (1210, 17569)]