20801950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{32003}}^1$

素因数の和:32028

約数の個数: 24

約数和(自身を含む): 41669208

約数和(自身を除く): 20867258

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 32003, 64006, 160015, 320030, 416039, 800075, 832078, 1600150, 2080195, 4160390, 10400975, 20801950]

約数ペア:

[(1, 20801950), (2, 10400975), (5, 4160390), (10, 2080195), (13, 1600150), (25, 832078), (26, 800075), (50, 416039), (65, 320030), (130, 160015), (325, 64006), (650, 32003)]