21354273

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6131}}^1$

素因数の和:6186

約数の個数: 20

約数和(自身を含む): 32646768

約数和(自身を除く): 11292495

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6131, 18393, 55179, 165537, 263633, 496611, 790899, 2372697, 7118091, 21354273]

約数ペア:

[(1, 21354273), (3, 7118091), (9, 2372697), (27, 790899), (43, 496611), (81, 263633), (129, 165537), (387, 55179), (1161, 18393), (3483, 6131)]