28506255

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1$

素因数の和:391

約数の個数: 32

約数和(自身を含む): 46759680

約数和(自身を除く): 18253425

約数列:

[1, 3, 5, 15, 89, 131, 163, 267, 393, 445, 489, 655, 815, 1335, 1965, 2445, 11659, 14507, 21353, 34977, 43521, 58295, 64059, 72535, 106765, 174885, 217605, 320295, 1900417, 5701251, 9502085, 28506255]

約数ペア:

[(1, 28506255), (3, 9502085), (5, 5701251), (15, 1900417), (89, 320295), (131, 217605), (163, 174885), (267, 106765), (393, 72535), (445, 64059), (489, 58295), (655, 43521), (815, 34977), (1335, 21353), (1965, 14507), (2445, 11659)]