20741968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{99721}}^1$

素因数の和:99742

約数の個数: 20

約数和(自身を含む): 43279348

約数和(自身を除く): 22537380

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 99721, 199442, 398884, 797768, 1296373, 1595536, 2592746, 5185492, 10370984, 20741968]

約数ペア:

[(1, 20741968), (2, 10370984), (4, 5185492), (8, 2592746), (13, 1595536), (16, 1296373), (26, 797768), (52, 398884), (104, 199442), (208, 99721)]