68390090

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{17581}}^1$

素因数の和:17977

約数の個数: 16

約数和(自身を含む): 123425640

約数和(自身を除く): 55035550

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 17581, 35162, 87905, 175810, 6839009, 13678018, 34195045, 68390090]

約数ペア:

[(1, 68390090), (2, 34195045), (5, 13678018), (10, 6839009), (389, 175810), (778, 87905), (1945, 35162), (3890, 17581)]