20847687

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{3833}}^1$

素因数の和:3887

約数の個数: 24

約数和(自身を含む): 33217776

約数和(自身を除く): 12370089

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 3833, 5439, 11499, 26831, 80493, 141821, 187817, 425463, 563451, 992747, 2978241, 6949229, 20847687]

約数ペア:

[(1, 20847687), (3, 6949229), (7, 2978241), (21, 992747), (37, 563451), (49, 425463), (111, 187817), (147, 141821), (259, 80493), (777, 26831), (1813, 11499), (3833, 5439)]