19991452

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3593}}^1$

素因数の和:3717

約数の個数: 24

約数和(自身を含む): 38038896

約数和(自身を除く): 18047444

約数列:

[1, 2, 4, 13, 26, 52, 107, 214, 428, 1391, 2782, 3593, 5564, 7186, 14372, 46709, 93418, 186836, 384451, 768902, 1537804, 4997863, 9995726, 19991452]

約数ペア:

[(1, 19991452), (2, 9995726), (4, 4997863), (13, 1537804), (26, 768902), (52, 384451), (107, 186836), (214, 93418), (428, 46709), (1391, 14372), (2782, 7186), (3593, 5564)]