28821275

素因数分解:

$5^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1049}}^1$

素因数の和:1223

約数の個数: 24

約数和(自身を含む): 41143200

約数和(自身を除く): 12321925

約数列:

[1, 5, 7, 25, 35, 157, 175, 785, 1049, 1099, 3925, 5245, 5495, 7343, 26225, 27475, 36715, 164693, 183575, 823465, 1152851, 4117325, 5764255, 28821275]

約数ペア:

[(1, 28821275), (5, 5764255), (7, 4117325), (25, 1152851), (35, 823465), (157, 183575), (175, 164693), (785, 36715), (1049, 27475), (1099, 26225), (3925, 7343), (5245, 5495)]