21715918

素因数分解:

$2^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{3121}}^1$

素因数の和:3208

約数の個数: 24

約数和(自身を含む): 38438064

約数和(自身を除く): 16722146

約数列:

[1, 2, 7, 14, 49, 71, 98, 142, 497, 994, 3121, 3479, 6242, 6958, 21847, 43694, 152929, 221591, 305858, 443182, 1551137, 3102274, 10857959, 21715918]

約数ペア:

[(1, 21715918), (2, 10857959), (7, 3102274), (14, 1551137), (49, 443182), (71, 305858), (98, 221591), (142, 152929), (497, 43694), (994, 21847), (3121, 6958), (3479, 6242)]