387942740

素因数分解:

$2^2\times 5^1\times {\mathrm{1571}}^1\times {\mathrm{12347}}^1$

素因数の和:13927

約数の個数: 24

約数和(自身を含む): 815264352

約数和(自身を除く): 427321612

約数列:

[1, 2, 4, 5, 10, 20, 1571, 3142, 6284, 7855, 12347, 15710, 24694, 31420, 49388, 61735, 123470, 246940, 19397137, 38794274, 77588548, 96985685, 193971370, 387942740]

約数ペア:

[(1, 387942740), (2, 193971370), (4, 96985685), (5, 77588548), (10, 38794274), (20, 19397137), (1571, 246940), (3142, 123470), (6284, 61735), (7855, 49388), (12347, 31420), (15710, 24694)]