11720905

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19699}}^1$

素因数の和:19728

約数の個数: 16

約数和(自身を含む): 17020800

約数和(自身を除く): 5299895

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 19699, 98495, 137893, 334883, 689465, 1674415, 2344181, 11720905]

約数ペア:

[(1, 11720905), (5, 2344181), (7, 1674415), (17, 689465), (35, 334883), (85, 137893), (119, 98495), (595, 19699)]