220721020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{848927}}^1$

素因数の和:848949

約数の個数: 24

約数和(自身を含む): 499169664

約数和(自身を除く): 278448644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 848927, 1697854, 3395708, 4244635, 8489270, 11036051, 16978540, 22072102, 44144204, 55180255, 110360510, 220721020]

約数ペア:

[(1, 220721020), (2, 110360510), (4, 55180255), (5, 44144204), (10, 22072102), (13, 16978540), (20, 11036051), (26, 8489270), (52, 4244635), (65, 3395708), (130, 1697854), (260, 848927)]