18961361

素因数分解:

${\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:328

約数の個数: 16

約数和(自身を含む): 20476800

約数和(自身を除く): 1515439

約数列:

[1, 23, 59, 89, 157, 1357, 2047, 3611, 5251, 9263, 13973, 120773, 213049, 321379, 824407, 18961361]

約数ペア:

[(1, 18961361), (23, 824407), (59, 321379), (89, 213049), (157, 120773), (1357, 13973), (2047, 9263), (3611, 5251)]