291247280

素因数分解:

$2^4\times 5^1\times {\mathrm{3640591}}^1$

素因数の和:3640604

約数の個数: 20

約数和(自身を含む): 677150112

約数和(自身を除く): 385902832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640591, 7281182, 14562364, 18202955, 29124728, 36405910, 58249456, 72811820, 145623640, 291247280]

約数ペア:

[(1, 291247280), (2, 145623640), (4, 72811820), (5, 58249456), (8, 36405910), (10, 29124728), (16, 18202955), (20, 14562364), (40, 7281182), (80, 3640591)]