21908801

素因数分解:

${\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{43}}^2$

素因数の和:161

約数の個数: 18

約数和(自身を含む): 24408342

約数和(自身を除く): 2499541

約数列:

[1, 17, 41, 43, 289, 697, 731, 1763, 1849, 11849, 12427, 29971, 31433, 75809, 509507, 534361, 1288753, 21908801]

約数ペア:

[(1, 21908801), (17, 1288753), (41, 534361), (43, 509507), (289, 75809), (697, 31433), (731, 29971), (1763, 12427), (1849, 11849)]