19984797

素因数分解:

$3^2\times 7^2\times {\mathrm{45317}}^1$

素因数の和:45337

約数の個数: 18

約数和(自身を含む): 33580638

約数和(自身を除く): 13595841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45317, 135951, 317219, 407853, 951657, 2220533, 2854971, 6661599, 19984797]

約数ペア:

[(1, 19984797), (3, 6661599), (7, 2854971), (9, 2220533), (21, 951657), (49, 407853), (63, 317219), (147, 135951), (441, 45317)]