388880

素因数分解:

$2^4\times 5^1\times {\mathrm{4861}}^1$

素因数の和:4874

約数の個数: 20

約数和(自身を含む): 904332

約数和(自身を除く): 515452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4861, 9722, 19444, 24305, 38888, 48610, 77776, 97220, 194440, 388880]

約数ペア:

[(1, 388880), (2, 194440), (4, 97220), (5, 77776), (8, 48610), (10, 38888), (16, 24305), (20, 19444), (40, 9722), (80, 4861)]