390303280

素因数分解:

$2^4\times 5^1\times {\mathrm{4878791}}^1$

素因数の和:4878804

約数の個数: 20

約数和(自身を含む): 907455312

約数和(自身を除く): 517152032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4878791, 9757582, 19515164, 24393955, 39030328, 48787910, 78060656, 97575820, 195151640, 390303280]

約数ペア:

[(1, 390303280), (2, 195151640), (4, 97575820), (5, 78060656), (8, 48787910), (10, 39030328), (16, 24393955), (20, 19515164), (40, 9757582), (80, 4878791)]