80620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:177

約数の個数: 24

約数和(自身を含む): 176400

約数和(自身を除く): 95780

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 695, 1390, 2780, 4031, 8062, 16124, 20155, 40310, 80620]

約数ペア:

[(1, 80620), (2, 40310), (4, 20155), (5, 16124), (10, 8062), (20, 4031), (29, 2780), (58, 1390), (116, 695), (139, 580), (145, 556), (278, 290)]