216225

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^2$

素因数の和:78

約数の個数: 27

約数和(自身を含む): 400179

約数和(自身を除く): 183954

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 961, 1395, 2325, 2883, 4805, 6975, 8649, 14415, 24025, 43245, 72075, 216225]

約数ペア:

[(1, 216225), (3, 72075), (5, 43245), (9, 24025), (15, 14415), (25, 8649), (31, 6975), (45, 4805), (75, 2883), (93, 2325), (155, 1395), (225, 961), (279, 775)]