21939220

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{10861}}^1$

素因数の和:10971

約数の個数: 24

約数和(自身を含む): 46532808

約数和(自身を除く): 24593588

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 10861, 21722, 43444, 54305, 108610, 217220, 1096961, 2193922, 4387844, 5484805, 10969610, 21939220]

約数ペア:

[(1, 21939220), (2, 10969610), (4, 5484805), (5, 4387844), (10, 2193922), (20, 1096961), (101, 217220), (202, 108610), (404, 54305), (505, 43444), (1010, 21722), (2020, 10861)]