20807915

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5693}}^1$

素因数の和:5758

約数の個数: 16

約数和(自身を含む): 27057888

約数和(自身を除く): 6249973

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5693, 28465, 96781, 244799, 483905, 1223995, 4161583, 20807915]

約数ペア:

[(1, 20807915), (5, 4161583), (17, 1223995), (43, 483905), (85, 244799), (215, 96781), (731, 28465), (3655, 5693)]