40570820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28571}}^1$

素因数の和:28651

約数の個数: 24

約数和(自身を含む): 86401728

約数和(自身を除く): 45830908

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28571, 57142, 114284, 142855, 285710, 571420, 2028541, 4057082, 8114164, 10142705, 20285410, 40570820]

約数ペア:

[(1, 40570820), (2, 20285410), (4, 10142705), (5, 8114164), (10, 4057082), (20, 2028541), (71, 571420), (142, 285710), (284, 142855), (355, 114284), (710, 57142), (1420, 28571)]