20008915

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 26038512

約数和(自身を除く): 6029597

約数列:

[1, 5, 17, 61, 85, 227, 289, 305, 1037, 1135, 1445, 3859, 5185, 13847, 17629, 19295, 65603, 69235, 88145, 235399, 328015, 1176995, 4001783, 20008915]

約数ペア:

[(1, 20008915), (5, 4001783), (17, 1176995), (61, 328015), (85, 235399), (227, 88145), (289, 69235), (305, 65603), (1037, 19295), (1135, 17629), (1445, 13847), (3859, 5185)]