1285458220

素因数分解:

$2^2\times 5^1\times {\mathrm{1531}}^1\times {\mathrm{41981}}^1$

素因数の和:43521

約数の個数: 24

約数和(自身を含む): 2701289808

約数和(自身を除く): 1415831588

約数列:

[1, 2, 4, 5, 10, 20, 1531, 3062, 6124, 7655, 15310, 30620, 41981, 83962, 167924, 209905, 419810, 839620, 64272911, 128545822, 257091644, 321364555, 642729110, 1285458220]

約数ペア:

[(1, 1285458220), (2, 642729110), (4, 321364555), (5, 257091644), (10, 128545822), (20, 64272911), (1531, 839620), (3062, 419810), (6124, 209905), (7655, 167924), (15310, 83962), (30620, 41981)]