18780879

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{1213}}^1$

素因数の和:1626

約数の個数: 16

約数和(自身を含む): 27057632

約数和(自身を除く): 8276753

約数列:

[1, 3, 13, 39, 397, 1191, 1213, 3639, 5161, 15483, 15769, 47307, 481561, 1444683, 6260293, 18780879]

約数ペア:

[(1, 18780879), (3, 6260293), (13, 1444683), (39, 481561), (397, 47307), (1191, 15769), (1213, 15483), (3639, 5161)]