128537968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{617971}}^1$

素因数の和:617992

約数の個数: 20

約数和(自身を含む): 268199848

約数和(自身を除く): 139661880

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 617971, 1235942, 2471884, 4943768, 8033623, 9887536, 16067246, 32134492, 64268984, 128537968]

約数ペア:

[(1, 128537968), (2, 64268984), (4, 32134492), (8, 16067246), (13, 9887536), (16, 8033623), (26, 4943768), (52, 2471884), (104, 1235942), (208, 617971)]