7428020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5231}}^1$

素因数の和:5311

約数の個数: 24

約数和(自身を含む): 15821568

約数和(自身を除く): 8393548

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 5231, 10462, 20924, 26155, 52310, 104620, 371401, 742802, 1485604, 1857005, 3714010, 7428020]

約数ペア:

[(1, 7428020), (2, 3714010), (4, 1857005), (5, 1485604), (10, 742802), (20, 371401), (71, 104620), (142, 52310), (284, 26155), (355, 20924), (710, 10462), (1420, 5231)]