81855980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{141131}}^1$

素因数の和:141169

約数の個数: 24

約数和(自身を含む): 177826320

約数和(自身を除く): 95970340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 141131, 282262, 564524, 705655, 1411310, 2822620, 4092799, 8185598, 16371196, 20463995, 40927990, 81855980]

約数ペア:

[(1, 81855980), (2, 40927990), (4, 20463995), (5, 16371196), (10, 8185598), (20, 4092799), (29, 2822620), (58, 1411310), (116, 705655), (145, 564524), (290, 282262), (580, 141131)]