27998770

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{20143}}^1$

素因数の和:20289

約数の個数: 16

約数和(自身を含む): 50762880

約数和(自身を除く): 22764110

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 20143, 40286, 100715, 201430, 2799877, 5599754, 13999385, 27998770]

約数ペア:

[(1, 27998770), (2, 13999385), (5, 5599754), (10, 2799877), (139, 201430), (278, 100715), (695, 40286), (1390, 20143)]