21609881279

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{2298679}}^1$

素因数の和:2298782

約数の個数: 16

約数和(自身を含む): 26480793600

約数和(自身を除く): 4870912321

約数列:

[1, 7, 17, 79, 119, 553, 1343, 9401, 2298679, 16090753, 39077543, 181595641, 273542801, 1271169487, 3087125897, 21609881279]

約数ペア:

[(1, 21609881279), (7, 3087125897), (17, 1271169487), (79, 273542801), (119, 181595641), (553, 39077543), (1343, 16090753), (9401, 2298679)]