398590940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{164707}}^1$

素因数の和:164738

約数の個数: 36

約数和(自身を含む): 920058888

約数和(自身を除く): 521467948

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 164707, 329414, 658828, 823535, 1647070, 1811777, 3294140, 3623554, 7247108, 9058885, 18117770, 19929547, 36235540, 39859094, 79718188, 99647735, 199295470, 398590940]

約数ペア:

[(1, 398590940), (2, 199295470), (4, 99647735), (5, 79718188), (10, 39859094), (11, 36235540), (20, 19929547), (22, 18117770), (44, 9058885), (55, 7247108), (110, 3623554), (121, 3294140), (220, 1811777), (242, 1647070), (484, 823535), (605, 658828), (1210, 329414), (2420, 164707)]