19221219

素因数分解:

$3^4\times {\mathrm{359}}^1\times {\mathrm{661}}^1$

素因数の和:1032

約数の個数: 20

約数和(自身を含む): 28836720

約数和(自身を除く): 9615501

約数列:

[1, 3, 9, 27, 81, 359, 661, 1077, 1983, 3231, 5949, 9693, 17847, 29079, 53541, 237299, 711897, 2135691, 6407073, 19221219]

約数ペア:

[(1, 19221219), (3, 6407073), (9, 2135691), (27, 711897), (81, 237299), (359, 53541), (661, 29079), (1077, 17847), (1983, 9693), (3231, 5949)]