128849968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{619471}}^1$

素因数の和:619492

約数の個数: 20

約数和(自身を含む): 268850848

約数和(自身を除く): 140000880

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 619471, 1238942, 2477884, 4955768, 8053123, 9911536, 16106246, 32212492, 64424984, 128849968]

約数ペア:

[(1, 128849968), (2, 64424984), (4, 32212492), (8, 16106246), (13, 9911536), (16, 8053123), (26, 4955768), (52, 2477884), (104, 1238942), (208, 619471)]