21381752

素因数分解:

$2^3\times 7^1\times {\mathrm{381817}}^1$

素因数の和:381830

約数の個数: 16

約数和(自身を含む): 45818160

約数和(自身を除く): 24436408

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 381817, 763634, 1527268, 2672719, 3054536, 5345438, 10690876, 21381752]

約数ペア:

[(1, 21381752), (2, 10690876), (4, 5345438), (7, 3054536), (8, 2672719), (14, 1527268), (28, 763634), (56, 381817)]