90869890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{102101}}^1$

素因数の和:102197

約数の個数: 16

約数和(自身を含む): 165405240

約数和(自身を除く): 74535350

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 102101, 204202, 510505, 1021010, 9086989, 18173978, 45434945, 90869890]

約数ペア:

[(1, 90869890), (2, 45434945), (5, 18173978), (10, 9086989), (89, 1021010), (178, 510505), (445, 204202), (890, 102101)]