78765740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1\times {\mathrm{977}}^1$

素因数の和:1154

約数の個数: 48

約数和(自身を含む): 172519200

約数和(自身を除く): 93753460

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 139, 145, 278, 290, 556, 580, 695, 977, 1390, 1954, 2780, 3908, 4031, 4885, 8062, 9770, 16124, 19540, 20155, 28333, 40310, 56666, 80620, 113332, 135803, 141665, 271606, 283330, 543212, 566660, 679015, 1358030, 2716060, 3938287, 7876574, 15753148, 19691435, 39382870, 78765740]

約数ペア:

[(1, 78765740), (2, 39382870), (4, 19691435), (5, 15753148), (10, 7876574), (20, 3938287), (29, 2716060), (58, 1358030), (116, 679015), (139, 566660), (145, 543212), (278, 283330), (290, 271606), (556, 141665), (580, 135803), (695, 113332), (977, 80620), (1390, 56666), (1954, 40310), (2780, 28333), (3908, 20155), (4031, 19540), (4885, 16124), (8062, 9770)]