21243886360

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4872451}}^1$

素因数の和:4872571

約数の個数: 32

約数和(自身を含む): 48237274800

約数和(自身を除く): 26993388440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 4872451, 9744902, 19489804, 24362255, 38979608, 48724510, 97449020, 194898040, 531097159, 1062194318, 2124388636, 2655485795, 4248777272, 5310971590, 10621943180, 21243886360]

約数ペア:

[(1, 21243886360), (2, 10621943180), (4, 5310971590), (5, 4248777272), (8, 2655485795), (10, 2124388636), (20, 1062194318), (40, 531097159), (109, 194898040), (218, 97449020), (436, 48724510), (545, 38979608), (872, 24362255), (1090, 19489804), (2180, 9744902), (4360, 4872451)]