640736154255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2512690801}}^1$

素因数の和:2512690826

約数の個数: 16

約数和(自身を含む): 1085482426464

約数和(自身を除く): 444746272209

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 2512690801, 7538072403, 12563454005, 37690362015, 42715743617, 128147230851, 213578718085, 640736154255]

約数ペア:

[(1, 640736154255), (3, 213578718085), (5, 128147230851), (15, 42715743617), (17, 37690362015), (51, 12563454005), (85, 7538072403), (255, 2512690801)]