21302931

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{12703}}^1$

素因数の和:12762

約数の個数: 16

約数和(自身を含む): 31302656

約数和(自身を除く): 9999725

約数列:

[1, 3, 13, 39, 43, 129, 559, 1677, 12703, 38109, 165139, 495417, 546229, 1638687, 7100977, 21302931]

約数ペア:

[(1, 21302931), (3, 7100977), (13, 1638687), (39, 546229), (43, 495417), (129, 165139), (559, 38109), (1677, 12703)]