21273165

素因数分解:

$3^3\times 5^1\times {\mathrm{157579}}^1$

素因数の和:157593

約数の個数: 16

約数和(自身を含む): 37819200

約数和(自身を除く): 16546035

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 157579, 472737, 787895, 1418211, 2363685, 4254633, 7091055, 21273165]

約数ペア:

[(1, 21273165), (3, 7091055), (5, 4254633), (9, 2363685), (15, 1418211), (27, 787895), (45, 472737), (135, 157579)]