21917798

素因数分解:

$2^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{1609}}^1$

素因数の和:1764

約数の個数: 24

約数和(自身を含む): 38543400

約数和(自身を除く): 16625602

約数列:

[1, 2, 7, 14, 49, 98, 139, 278, 973, 1609, 1946, 3218, 6811, 11263, 13622, 22526, 78841, 157682, 223651, 447302, 1565557, 3131114, 10958899, 21917798]

約数ペア:

[(1, 21917798), (2, 10958899), (7, 3131114), (14, 1565557), (49, 447302), (98, 223651), (139, 157682), (278, 78841), (973, 22526), (1609, 13622), (1946, 11263), (3218, 6811)]