21731420

素因数分解:

$2^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{2837}}^1$

素因数の和:3229

約数の個数: 24

約数和(自身を含む): 45771264

約数和(自身を除く): 24039844

約数列:

[1, 2, 4, 5, 10, 20, 383, 766, 1532, 1915, 2837, 3830, 5674, 7660, 11348, 14185, 28370, 56740, 1086571, 2173142, 4346284, 5432855, 10865710, 21731420]

約数ペア:

[(1, 21731420), (2, 10865710), (4, 5432855), (5, 4346284), (10, 2173142), (20, 1086571), (383, 56740), (766, 28370), (1532, 14185), (1915, 11348), (2837, 7660), (3830, 5674)]