20308990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{5387}}^1$

素因数の和:5436

約数の個数: 32

約数和(自身を含む): 40733280

約数和(自身を除く): 20424290

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 5387, 10774, 26935, 53870, 70031, 140062, 156223, 312446, 350155, 700310, 781115, 1562230, 2030899, 4061798, 10154495, 20308990]

約数ペア:

[(1, 20308990), (2, 10154495), (5, 4061798), (10, 2030899), (13, 1562230), (26, 781115), (29, 700310), (58, 350155), (65, 312446), (130, 156223), (145, 140062), (290, 70031), (377, 53870), (754, 26935), (1885, 10774), (3770, 5387)]