1991691969

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{489239}}^1$

素因数の和:489324

約数の個数: 16

約数和(自身を含む): 2818022400

約数和(自身を除く): 826330431

約数列:

[1, 3, 23, 59, 69, 177, 1357, 4071, 489239, 1467717, 11252497, 28865101, 33757491, 86595303, 663897323, 1991691969]

約数ペア:

[(1, 1991691969), (3, 663897323), (23, 86595303), (59, 33757491), (69, 28865101), (177, 11252497), (1357, 1467717), (4071, 489239)]