18997036

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{1381}}^1$

素因数の和:1585

約数の個数: 24

約数和(自身を含む): 35213360

約数和(自身を除く): 16216324

約数列:

[1, 2, 4, 19, 38, 76, 181, 362, 724, 1381, 2762, 3439, 5524, 6878, 13756, 26239, 52478, 104956, 249961, 499922, 999844, 4749259, 9498518, 18997036]

約数ペア:

[(1, 18997036), (2, 9498518), (4, 4749259), (19, 999844), (38, 499922), (76, 249961), (181, 104956), (362, 52478), (724, 26239), (1381, 13756), (2762, 6878), (3439, 5524)]