12887740

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3271}}^1$

素因数の和:3477

約数の個数: 24

約数和(自身を含む): 27209952

約数和(自身を除く): 14322212

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3271, 3940, 6542, 13084, 16355, 32710, 65420, 644387, 1288774, 2577548, 3221935, 6443870, 12887740]

約数ペア:

[(1, 12887740), (2, 6443870), (4, 3221935), (5, 2577548), (10, 1288774), (20, 644387), (197, 65420), (394, 32710), (788, 16355), (985, 13084), (1970, 6542), (3271, 3940)]