21421615

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{1669}}^1$

素因数の和:1842

約数の個数: 16

約数和(自身を含む): 27414720

約数和(自身を除く): 5993105

約数列:

[1, 5, 17, 85, 151, 755, 1669, 2567, 8345, 12835, 28373, 141865, 252019, 1260095, 4284323, 21421615]

約数ペア:

[(1, 21421615), (5, 4284323), (17, 1260095), (85, 252019), (151, 141865), (755, 28373), (1669, 12835), (2567, 8345)]