21993207

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1\times {\mathrm{571}}^1$

素因数の和:958

約数の個数: 16

約数和(自身を含む): 30256512

約数和(自身を除く): 8263305

約数列:

[1, 3, 37, 111, 347, 571, 1041, 1713, 12839, 21127, 38517, 63381, 198137, 594411, 7331069, 21993207]

約数ペア:

[(1, 21993207), (3, 7331069), (37, 594411), (111, 198137), (347, 63381), (571, 38517), (1041, 21127), (1713, 12839)]