321620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1237}}^1$

素因数の和:1259

約数の個数: 24

約数和(自身を含む): 727944

約数和(自身を除く): 406324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1237, 2474, 4948, 6185, 12370, 16081, 24740, 32162, 64324, 80405, 160810, 321620]

約数ペア:

[(1, 321620), (2, 160810), (4, 80405), (5, 64324), (10, 32162), (13, 24740), (20, 16081), (26, 12370), (52, 6185), (65, 4948), (130, 2474), (260, 1237)]