89903980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109639}}^1$

素因数の和:109689

約数の個数: 24

約数和(自身を含む): 193404960

約数和(自身を除く): 103500980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 109639, 219278, 438556, 548195, 1096390, 2192780, 4495199, 8990398, 17980796, 22475995, 44951990, 89903980]

約数ペア:

[(1, 89903980), (2, 44951990), (4, 22475995), (5, 17980796), (10, 8990398), (20, 4495199), (41, 2192780), (82, 1096390), (164, 548195), (205, 438556), (410, 219278), (820, 109639)]