81569878

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{373}}^1\times {\mathrm{647}}^1$

素因数の和:1048

約数の個数: 24

約数和(自身を含む): 133051248

約数和(自身を除く): 51481370

約数列:

[1, 2, 13, 26, 169, 338, 373, 647, 746, 1294, 4849, 8411, 9698, 16822, 63037, 109343, 126074, 218686, 241331, 482662, 3137303, 6274606, 40784939, 81569878]

約数ペア:

[(1, 81569878), (2, 40784939), (13, 6274606), (26, 3137303), (169, 482662), (338, 241331), (373, 218686), (647, 126074), (746, 109343), (1294, 63037), (4849, 16822), (8411, 9698)]