64551640

素因数分解:

$2^3\times 5^1\times {\mathrm{433}}^1\times {\mathrm{3727}}^1$

素因数の和:4171

約数の個数: 32

約数和(自身を含む): 145615680

約数和(自身を除く): 81064040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 433, 866, 1732, 2165, 3464, 3727, 4330, 7454, 8660, 14908, 17320, 18635, 29816, 37270, 74540, 149080, 1613791, 3227582, 6455164, 8068955, 12910328, 16137910, 32275820, 64551640]

約数ペア:

[(1, 64551640), (2, 32275820), (4, 16137910), (5, 12910328), (8, 8068955), (10, 6455164), (20, 3227582), (40, 1613791), (433, 149080), (866, 74540), (1732, 37270), (2165, 29816), (3464, 18635), (3727, 17320), (4330, 14908), (7454, 8660)]