20039480

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3191}}^1$

素因数の和:3359

約数の個数: 32

約数和(自身を含む): 45390240

約数和(自身を除く): 25350760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 3191, 6280, 6382, 12764, 15955, 25528, 31910, 63820, 127640, 500987, 1001974, 2003948, 2504935, 4007896, 5009870, 10019740, 20039480]

約数ペア:

[(1, 20039480), (2, 10019740), (4, 5009870), (5, 4007896), (8, 2504935), (10, 2003948), (20, 1001974), (40, 500987), (157, 127640), (314, 63820), (628, 31910), (785, 25528), (1256, 15955), (1570, 12764), (3140, 6382), (3191, 6280)]