20990216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201829}}^1$

素因数の和:201848

約数の個数: 16

約数和(自身を含む): 42384300

約数和(自身を除く): 21394084

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201829, 403658, 807316, 1614632, 2623777, 5247554, 10495108, 20990216]

約数ペア:

[(1, 20990216), (2, 10495108), (4, 5247554), (8, 2623777), (13, 1614632), (26, 807316), (52, 403658), (104, 201829)]