21575240

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10177}}^1$

素因数の和:10241

約数の個数: 32

約数和(自身を含む): 49465080

約数和(自身を除く): 27889840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10177, 20354, 40708, 50885, 81416, 101770, 203540, 407080, 539381, 1078762, 2157524, 2696905, 4315048, 5393810, 10787620, 21575240]

約数ペア:

[(1, 21575240), (2, 10787620), (4, 5393810), (5, 4315048), (8, 2696905), (10, 2157524), (20, 1078762), (40, 539381), (53, 407080), (106, 203540), (212, 101770), (265, 81416), (424, 50885), (530, 40708), (1060, 20354), (2120, 10177)]