11909090

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{13381}}^1$

素因数の和:13477

約数の個数: 16

約数和(自身を含む): 21678840

約数和(自身を除く): 9769750

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 13381, 26762, 66905, 133810, 1190909, 2381818, 5954545, 11909090]

約数ペア:

[(1, 11909090), (2, 5954545), (5, 2381818), (10, 1190909), (89, 133810), (178, 66905), (445, 26762), (890, 13381)]