21343688

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140419}}^1$

素因数の和:140444

約数の個数: 16

約数和(自身を含む): 42126000

約数和(自身を除く): 20782312

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140419, 280838, 561676, 1123352, 2667961, 5335922, 10671844, 21343688]

約数ペア:

[(1, 21343688), (2, 10671844), (4, 5335922), (8, 2667961), (19, 1123352), (38, 561676), (76, 280838), (152, 140419)]