28538025

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{8849}}^1$

素因数の和:8905

約数の個数: 24

約数和(自身を含む): 48285600

約数和(自身を除く): 19747575

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 8849, 26547, 44245, 132735, 221225, 380507, 663675, 1141521, 1902535, 5707605, 9512675, 28538025]

約数ペア:

[(1, 28538025), (3, 9512675), (5, 5707605), (15, 1902535), (25, 1141521), (43, 663675), (75, 380507), (129, 221225), (215, 132735), (645, 44245), (1075, 26547), (3225, 8849)]