21283715

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^3$

素因数の和:187

約数の個数: 16

約数和(自身を含む): 26732160

約数和(自身を除く): 5448445

約数列:

[1, 5, 41, 47, 205, 235, 1927, 2209, 9635, 11045, 90569, 103823, 452845, 519115, 4256743, 21283715]

約数ペア:

[(1, 21283715), (5, 4256743), (41, 519115), (47, 452845), (205, 103823), (235, 90569), (1927, 11045), (2209, 9635)]