21498237

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18517}}^1$

素因数の和:18569

約数の個数: 16

約数和(自身を含む): 32591680

約数和(自身を除く): 11093443

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18517, 55551, 166653, 499959, 796231, 2388693, 7166079, 21498237]

約数ペア:

[(1, 21498237), (3, 7166079), (9, 2388693), (27, 796231), (43, 499959), (129, 166653), (387, 55551), (1161, 18517)]