21808276

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{40993}}^1$

素因数の和:41023

約数の個数: 24

約数和(自身を含む): 45913280

約数和(自身を除く): 24105004

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 40993, 81986, 163972, 286951, 573902, 778867, 1147804, 1557734, 3115468, 5452069, 10904138, 21808276]

約数ペア:

[(1, 21808276), (2, 10904138), (4, 5452069), (7, 3115468), (14, 1557734), (19, 1147804), (28, 778867), (38, 573902), (76, 286951), (133, 163972), (266, 81986), (532, 40993)]