19989291

素因数分解:

$3^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{12049}}^1$

素因数の和:12138

約数の個数: 16

約数和(自身を含む): 30848000

約数和(自身を除く): 10858709

約数列:

[1, 3, 7, 21, 79, 237, 553, 1659, 12049, 36147, 84343, 253029, 951871, 2855613, 6663097, 19989291]

約数ペア:

[(1, 19989291), (3, 6663097), (7, 2855613), (21, 951871), (79, 253029), (237, 84343), (553, 36147), (1659, 12049)]