16981780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11959}}^1$

素因数の和:12039

約数の個数: 24

約数和(自身を含む): 36167040

約数和(自身を除く): 19185260

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 11959, 23918, 47836, 59795, 119590, 239180, 849089, 1698178, 3396356, 4245445, 8490890, 16981780]

約数ペア:

[(1, 16981780), (2, 8490890), (4, 4245445), (5, 3396356), (10, 1698178), (20, 849089), (71, 239180), (142, 119590), (284, 59795), (355, 47836), (710, 23918), (1420, 11959)]