80821825

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{3881}}^1$

素因数の和:3922

約数の個数: 36

約数和(自身を含む): 123470892

約数和(自身を除く): 42649067

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 1225, 2975, 3881, 4165, 19405, 20825, 27167, 65977, 97025, 135835, 190169, 329885, 461839, 679175, 950845, 1649425, 2309195, 3232873, 4754225, 11545975, 16164365, 80821825]

約数ペア:

[(1, 80821825), (5, 16164365), (7, 11545975), (17, 4754225), (25, 3232873), (35, 2309195), (49, 1649425), (85, 950845), (119, 679175), (175, 461839), (245, 329885), (425, 190169), (595, 135835), (833, 97025), (1225, 65977), (2975, 27167), (3881, 20825), (4165, 19405)]