28171215

素因数分解:

$3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1487}}^1$

素因数の和:1919

約数の個数: 24

約数和(自身を含む): 48979008

約数和(自身を除く): 20807793

約数列:

[1, 3, 5, 9, 15, 45, 421, 1263, 1487, 2105, 3789, 4461, 6315, 7435, 13383, 18945, 22305, 66915, 626027, 1878081, 3130135, 5634243, 9390405, 28171215]

約数ペア:

[(1, 28171215), (3, 9390405), (5, 5634243), (9, 3130135), (15, 1878081), (45, 626027), (421, 66915), (1263, 22305), (1487, 18945), (2105, 13383), (3789, 7435), (4461, 6315)]