28397680

素因数分解:

$2^4\times 5^1\times {\mathrm{354971}}^1$

素因数の和:354984

約数の個数: 20

約数和(自身を含む): 66024792

約数和(自身を除く): 37627112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 354971, 709942, 1419884, 1774855, 2839768, 3549710, 5679536, 7099420, 14198840, 28397680]

約数ペア:

[(1, 28397680), (2, 14198840), (4, 7099420), (5, 5679536), (8, 3549710), (10, 2839768), (16, 1774855), (20, 1419884), (40, 709942), (80, 354971)]