21109438

素因数分解:

$2^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{14639}}^1$

素因数の和:14751

約数の個数: 16

約数和(自身を含む): 36541440

約数和(自身を除く): 15432002

約数列:

[1, 2, 7, 14, 103, 206, 721, 1442, 14639, 29278, 102473, 204946, 1507817, 3015634, 10554719, 21109438]

約数ペア:

[(1, 21109438), (2, 10554719), (7, 3015634), (14, 1507817), (103, 204946), (206, 102473), (721, 29278), (1442, 14639)]