20778888580

素因数分解:

$2^2\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{831821}}^1$

素因数の和:833079

約数の個数: 24

約数和(自身を含む): 43670655000

約数和(自身を除く): 22891766420

約数列:

[1, 2, 4, 5, 10, 20, 1249, 2498, 4996, 6245, 12490, 24980, 831821, 1663642, 3327284, 4159105, 8318210, 16636420, 1038944429, 2077888858, 4155777716, 5194722145, 10389444290, 20778888580]

約数ペア:

[(1, 20778888580), (2, 10389444290), (4, 5194722145), (5, 4155777716), (10, 2077888858), (20, 1038944429), (1249, 16636420), (2498, 8318210), (4996, 4159105), (6245, 3327284), (12490, 1663642), (24980, 831821)]