20683730

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^3\times {\mathrm{421}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 39651120

約数和(自身を除く): 18967390

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 421, 578, 842, 1445, 2105, 2890, 4210, 4913, 7157, 9826, 14314, 24565, 35785, 49130, 71570, 121669, 243338, 608345, 1216690, 2068373, 4136746, 10341865, 20683730]

約数ペア:

[(1, 20683730), (2, 10341865), (5, 4136746), (10, 2068373), (17, 1216690), (34, 608345), (85, 243338), (170, 121669), (289, 71570), (421, 49130), (578, 35785), (842, 24565), (1445, 14314), (2105, 9826), (2890, 7157), (4210, 4913)]