28736225

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5297}}^1$

素因数の和:5345

約数の個数: 24

約数和(自身を含む): 42044928

約数和(自身を除く): 13308703

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 5297, 5425, 26485, 37079, 132425, 164207, 185395, 821035, 926975, 1149449, 4105175, 5747245, 28736225]

約数ペア:

[(1, 28736225), (5, 5747245), (7, 4105175), (25, 1149449), (31, 926975), (35, 821035), (155, 185395), (175, 164207), (217, 132425), (775, 37079), (1085, 26485), (5297, 5425)]