12920855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3163}}^1$

素因数の和:3230

約数の個数: 16

約数和(自身を含む): 16705920

約数和(自身を除く): 3785065

約数列:

[1, 5, 19, 43, 95, 215, 817, 3163, 4085, 15815, 60097, 136009, 300485, 680045, 2584171, 12920855]

約数ペア:

[(1, 12920855), (5, 2584171), (19, 680045), (43, 300485), (95, 136009), (215, 60097), (817, 15815), (3163, 4085)]