21013455

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{32579}}^1$

素因数の和:32630

約数の個数: 16

約数和(自身を含む): 34404480

約数和(自身を除く): 13391025

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 32579, 97737, 162895, 488685, 1400897, 4202691, 7004485, 21013455]

約数ペア:

[(1, 21013455), (3, 7004485), (5, 4202691), (15, 1400897), (43, 488685), (129, 162895), (215, 97737), (645, 32579)]