21780609

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{479}}^1\times {\mathrm{659}}^1$

素因数の和:1164

約数の個数: 16

約数和(自身を含む): 30412800

約数和(自身を除く): 8632191

約数列:

[1, 3, 23, 69, 479, 659, 1437, 1977, 11017, 15157, 33051, 45471, 315661, 946983, 7260203, 21780609]

約数ペア:

[(1, 21780609), (3, 7260203), (23, 946983), (69, 315661), (479, 45471), (659, 33051), (1437, 15157), (1977, 11017)]