18221240

素因数分解:

$2^3\times 5^1\times {\mathrm{455531}}^1$

素因数の和:455542

約数の個数: 16

約数和(自身を含む): 40997880

約数和(自身を除く): 22776640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 455531, 911062, 1822124, 2277655, 3644248, 4555310, 9110620, 18221240]

約数ペア:

[(1, 18221240), (2, 9110620), (4, 4555310), (5, 3644248), (8, 2277655), (10, 1822124), (20, 911062), (40, 455531)]