9999408040

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2475101}}^1$

素因数の和:2475213

約数の個数: 32

約数和(自身を含む): 22721436360

約数和(自身を除く): 12722028320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 2475101, 4950202, 9900404, 12375505, 19800808, 24751010, 49502020, 99004040, 249985201, 499970402, 999940804, 1249926005, 1999881608, 2499852010, 4999704020, 9999408040]

約数ペア:

[(1, 9999408040), (2, 4999704020), (4, 2499852010), (5, 1999881608), (8, 1249926005), (10, 999940804), (20, 499970402), (40, 249985201), (101, 99004040), (202, 49502020), (404, 24751010), (505, 19800808), (808, 12375505), (1010, 9900404), (2020, 4950202), (4040, 2475101)]