21205615535

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{612083}}^1$

素因数の和:612155

約数の個数: 24

約数和(自身を含む): 28226865744

約数和(自身を除く): 7021250209

約数列:

[1, 5, 13, 41, 65, 169, 205, 533, 845, 2665, 6929, 34645, 612083, 3060415, 7957079, 25095403, 39785395, 103442027, 125477015, 326240239, 517210135, 1631201195, 4241123107, 21205615535]

約数ペア:

[(1, 21205615535), (5, 4241123107), (13, 1631201195), (41, 517210135), (65, 326240239), (169, 125477015), (205, 103442027), (533, 39785395), (845, 25095403), (2665, 7957079), (6929, 3060415), (34645, 612083)]