19778823

素因数分解:

$3^4\times {\mathrm{61}}^1\times {\mathrm{4003}}^1$

素因数の和:4076

約数の個数: 20

約数和(自身を含む): 30038008

約数和(自身を除く): 10259185

約数列:

[1, 3, 9, 27, 61, 81, 183, 549, 1647, 4003, 4941, 12009, 36027, 108081, 244183, 324243, 732549, 2197647, 6592941, 19778823]

約数ペア:

[(1, 19778823), (3, 6592941), (9, 2197647), (27, 732549), (61, 324243), (81, 244183), (183, 108081), (549, 36027), (1647, 12009), (4003, 4941)]