28406475

素因数分解:

$3^2\times 5^2\times {\mathrm{191}}^1\times {\mathrm{661}}^1$

素因数の和:868

約数の個数: 36

約数和(自身を含む): 51222912

約数和(自身を除く): 22816437

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 191, 225, 573, 661, 955, 1719, 1983, 2865, 3305, 4775, 5949, 8595, 9915, 14325, 16525, 29745, 42975, 49575, 126251, 148725, 378753, 631255, 1136259, 1893765, 3156275, 5681295, 9468825, 28406475]

約数ペア:

[(1, 28406475), (3, 9468825), (5, 5681295), (9, 3156275), (15, 1893765), (25, 1136259), (45, 631255), (75, 378753), (191, 148725), (225, 126251), (573, 49575), (661, 42975), (955, 29745), (1719, 16525), (1983, 14325), (2865, 9915), (3305, 8595), (4775, 5949)]