66657968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{320471}}^1$

素因数の和:320492

約数の個数: 20

約数和(自身を含む): 139084848

約数和(自身を除く): 72426880

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 320471, 640942, 1281884, 2563768, 4166123, 5127536, 8332246, 16664492, 33328984, 66657968]

約数ペア:

[(1, 66657968), (2, 33328984), (4, 16664492), (8, 8332246), (13, 5127536), (16, 4166123), (26, 2563768), (52, 1281884), (104, 640942), (208, 320471)]