21787795

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{1871}}^1$

素因数の和:2030

約数の個数: 16

約数和(自身を含む): 27900288

約数和(自身を除く): 6112493

約数列:

[1, 5, 17, 85, 137, 685, 1871, 2329, 9355, 11645, 31807, 159035, 256327, 1281635, 4357559, 21787795]

約数ペア:

[(1, 21787795), (5, 4357559), (17, 1281635), (85, 256327), (137, 159035), (685, 31807), (1871, 11645), (2329, 9355)]