18711340

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13177}}^1$

素因数の和:13257

約数の個数: 24

約数和(自身を含む): 39850272

約数和(自身を除く): 21138932

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13177, 26354, 52708, 65885, 131770, 263540, 935567, 1871134, 3742268, 4677835, 9355670, 18711340]

約数ペア:

[(1, 18711340), (2, 9355670), (4, 4677835), (5, 3742268), (10, 1871134), (20, 935567), (71, 263540), (142, 131770), (284, 65885), (355, 52708), (710, 26354), (1420, 13177)]