208162825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{1459}}^1$

素因数の和:1921

約数の個数: 24

約数和(自身を含む): 278801600

約数和(自身を除く): 70638775

約数列:

[1, 5, 13, 25, 65, 325, 439, 1459, 2195, 5707, 7295, 10975, 18967, 28535, 36475, 94835, 142675, 474175, 640501, 3202505, 8326513, 16012525, 41632565, 208162825]

約数ペア:

[(1, 208162825), (5, 41632565), (13, 16012525), (25, 8326513), (65, 3202505), (325, 640501), (439, 474175), (1459, 142675), (2195, 94835), (5707, 36475), (7295, 28535), (10975, 18967)]