12788890

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{5351}}^1$

素因数の和:5597

約数の個数: 16

約数和(自身を含む): 23120640

約数和(自身を除く): 10331750

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 5351, 10702, 26755, 53510, 1278889, 2557778, 6394445, 12788890]

約数ペア:

[(1, 12788890), (2, 6394445), (5, 2557778), (10, 1278889), (239, 53510), (478, 26755), (1195, 10702), (2390, 5351)]