20398623

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{57139}}^1$

素因数の和:57166

約数の個数: 16

約数和(自身を含む): 32912640

約数和(自身を除く): 12514017

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 57139, 171417, 399973, 971363, 1199919, 2914089, 6799541, 20398623]

約数ペア:

[(1, 20398623), (3, 6799541), (7, 2914089), (17, 1199919), (21, 971363), (51, 399973), (119, 171417), (357, 57139)]