19965808

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65677}}^1$

素因数の和:65704

約数の個数: 20

約数和(自身を含む): 40720360

約数和(自身を除く): 20754552

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65677, 131354, 262708, 525416, 1050832, 1247863, 2495726, 4991452, 9982904, 19965808]

約数ペア:

[(1, 19965808), (2, 9982904), (4, 4991452), (8, 2495726), (16, 1247863), (19, 1050832), (38, 525416), (76, 262708), (152, 131354), (304, 65677)]