20828925

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{7121}}^1$

素因数の和:7150

約数の個数: 36

約数和(自身を含む): 40182324

約数和(自身を除く): 19353399

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 7121, 21363, 35605, 64089, 92573, 106815, 178025, 277719, 320445, 462865, 534075, 833157, 1388595, 1602225, 2314325, 4165785, 6942975, 20828925]

約数ペア:

[(1, 20828925), (3, 6942975), (5, 4165785), (9, 2314325), (13, 1602225), (15, 1388595), (25, 833157), (39, 534075), (45, 462865), (65, 320445), (75, 277719), (117, 178025), (195, 106815), (225, 92573), (325, 64089), (585, 35605), (975, 21363), (2925, 7121)]