78687580

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{4027}}^1$

素因数の和:5013

約数の個数: 24

約数和(自身を含む): 165454128

約数和(自身を除く): 86766548

約数列:

[1, 2, 4, 5, 10, 20, 977, 1954, 3908, 4027, 4885, 8054, 9770, 16108, 19540, 20135, 40270, 80540, 3934379, 7868758, 15737516, 19671895, 39343790, 78687580]

約数ペア:

[(1, 78687580), (2, 39343790), (4, 19671895), (5, 15737516), (10, 7868758), (20, 3934379), (977, 80540), (1954, 40270), (3908, 20135), (4027, 19540), (4885, 16108), (8054, 9770)]