20905121

素因数分解:

${\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:484

約数の個数: 16

約数和(自身を含む): 22997520

約数和(自身を除く): 2092399

約数列:

[1, 17, 41, 89, 337, 697, 1513, 3649, 5729, 13817, 29993, 62033, 234889, 509881, 1229713, 20905121]

約数ペア:

[(1, 20905121), (17, 1229713), (41, 509881), (89, 234889), (337, 62033), (697, 29993), (1513, 13817), (3649, 5729)]