21891160

素因数分解:

$2^3\times 5^1\times {\mathrm{617}}^1\times {\mathrm{887}}^1$

素因数の和:1515

約数の個数: 32

約数和(自身を含む): 49390560

約数和(自身を除く): 27499400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 617, 887, 1234, 1774, 2468, 3085, 3548, 4435, 4936, 6170, 7096, 8870, 12340, 17740, 24680, 35480, 547279, 1094558, 2189116, 2736395, 4378232, 5472790, 10945580, 21891160]

約数ペア:

[(1, 21891160), (2, 10945580), (4, 5472790), (5, 4378232), (8, 2736395), (10, 2189116), (20, 1094558), (40, 547279), (617, 35480), (887, 24680), (1234, 17740), (1774, 12340), (2468, 8870), (3085, 7096), (3548, 6170), (4435, 4936)]