217874420

素因数分解:

$2^2\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{9649}}^1$

素因数の和:10787

約数の個数: 24

約数和(自身を含む): 457989000

約数和(自身を除く): 240114580

約数列:

[1, 2, 4, 5, 10, 20, 1129, 2258, 4516, 5645, 9649, 11290, 19298, 22580, 38596, 48245, 96490, 192980, 10893721, 21787442, 43574884, 54468605, 108937210, 217874420]

約数ペア:

[(1, 217874420), (2, 108937210), (4, 54468605), (5, 43574884), (10, 21787442), (20, 10893721), (1129, 192980), (2258, 96490), (4516, 48245), (5645, 38596), (9649, 22580), (11290, 19298)]