64477660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{247991}}^1$

素因数の和:248013

約数の個数: 24

約数和(自身を含む): 145819296

約数和(自身を除く): 81341636

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 247991, 495982, 991964, 1239955, 2479910, 3223883, 4959820, 6447766, 12895532, 16119415, 32238830, 64477660]

約数ペア:

[(1, 64477660), (2, 32238830), (4, 16119415), (5, 12895532), (10, 6447766), (13, 4959820), (20, 3223883), (26, 2479910), (52, 1239955), (65, 991964), (130, 495982), (260, 247991)]