19258840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11197}}^1$

素因数の和:11251

約数の個数: 32

約数和(自身を含む): 44344080

約数和(自身を除く): 25085240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11197, 22394, 44788, 55985, 89576, 111970, 223940, 447880, 481471, 962942, 1925884, 2407355, 3851768, 4814710, 9629420, 19258840]

約数ペア:

[(1, 19258840), (2, 9629420), (4, 4814710), (5, 3851768), (8, 2407355), (10, 1925884), (20, 962942), (40, 481471), (43, 447880), (86, 223940), (172, 111970), (215, 89576), (344, 55985), (430, 44788), (860, 22394), (1720, 11197)]