20853820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{80207}}^1$

素因数の和:80229

約数の個数: 24

約数和(自身を含む): 47162304

約数和(自身を除く): 26308484

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 80207, 160414, 320828, 401035, 802070, 1042691, 1604140, 2085382, 4170764, 5213455, 10426910, 20853820]

約数ペア:

[(1, 20853820), (2, 10426910), (4, 5213455), (5, 4170764), (10, 2085382), (13, 1604140), (20, 1042691), (26, 802070), (52, 401035), (65, 320828), (130, 160414), (260, 80207)]