28203165

素因数分解:

$3^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{907}}^1$

素因数の和:1609

約数の個数: 24

約数和(自身を含む): 49010208

約数和(自身を除く): 20807043

約数列:

[1, 3, 5, 9, 15, 45, 691, 907, 2073, 2721, 3455, 4535, 6219, 8163, 10365, 13605, 31095, 40815, 626737, 1880211, 3133685, 5640633, 9401055, 28203165]

約数ペア:

[(1, 28203165), (3, 9401055), (5, 5640633), (9, 3133685), (15, 1880211), (45, 626737), (691, 40815), (907, 31095), (2073, 13605), (2721, 10365), (3455, 8163), (4535, 6219)]