28507510

素因数分解:

$2^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{20509}}^1$

素因数の和:20655

約数の個数: 16

約数和(自身を含む): 51685200

約数和(自身を除く): 23177690

約数列:

[1, 2, 5, 10, 139, 278, 695, 1390, 20509, 41018, 102545, 205090, 2850751, 5701502, 14253755, 28507510]

約数ペア:

[(1, 28507510), (2, 14253755), (5, 5701502), (10, 2850751), (139, 205090), (278, 102545), (695, 41018), (1390, 20509)]