18768855

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4157}}^1$

素因数の和:4215

約数の個数: 32

約数和(自身を含む): 35126784

約数和(自身を除く): 16357929

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 903, 1505, 4157, 4515, 12471, 20785, 29099, 62355, 87297, 145495, 178751, 436485, 536253, 893755, 1251257, 2681265, 3753771, 6256285, 18768855]

約数ペア:

[(1, 18768855), (3, 6256285), (5, 3753771), (7, 2681265), (15, 1251257), (21, 893755), (35, 536253), (43, 436485), (105, 178751), (129, 145495), (215, 87297), (301, 62355), (645, 29099), (903, 20785), (1505, 12471), (4157, 4515)]