19685815

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{2411}}^1$

素因数の和:2510

約数の個数: 16

約数和(自身を含む): 25007616

約数和(自身を除く): 5321801

約数列:

[1, 5, 23, 71, 115, 355, 1633, 2411, 8165, 12055, 55453, 171181, 277265, 855905, 3937163, 19685815]

約数ペア:

[(1, 19685815), (5, 3937163), (23, 855905), (71, 277265), (115, 171181), (355, 55453), (1633, 12055), (2411, 8165)]