21965080

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{1223}}^1$

素因数の和:1683

約数の個数: 32

約数和(自身を含む): 49572000

約数和(自身を除く): 27606920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1223, 1796, 2245, 2446, 3592, 4490, 4892, 6115, 8980, 9784, 12230, 17960, 24460, 48920, 549127, 1098254, 2196508, 2745635, 4393016, 5491270, 10982540, 21965080]

約数ペア:

[(1, 21965080), (2, 10982540), (4, 5491270), (5, 4393016), (8, 2745635), (10, 2196508), (20, 1098254), (40, 549127), (449, 48920), (898, 24460), (1223, 17960), (1796, 12230), (2245, 9784), (2446, 8980), (3592, 6115), (4490, 4892)]