209218820

素因数分解:

$2^2\times 5^1\times {\mathrm{1279}}^1\times {\mathrm{8179}}^1$

素因数の和:9467

約数の個数: 24

約数和(自身を含む): 439756800

約数和(自身を除く): 230537980

約数列:

[1, 2, 4, 5, 10, 20, 1279, 2558, 5116, 6395, 8179, 12790, 16358, 25580, 32716, 40895, 81790, 163580, 10460941, 20921882, 41843764, 52304705, 104609410, 209218820]

約数ペア:

[(1, 209218820), (2, 104609410), (4, 52304705), (5, 41843764), (10, 20921882), (20, 10460941), (1279, 163580), (2558, 81790), (5116, 40895), (6395, 32716), (8179, 25580), (12790, 16358)]