21240464

素因数分解:

$2^4\times 7^1\times {\mathrm{199}}^1\times {\mathrm{953}}^1$

素因数の和:1167

約数の個数: 40

約数和(自身を含む): 47318400

約数和(自身を除く): 26077936

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 199, 398, 796, 953, 1393, 1592, 1906, 2786, 3184, 3812, 5572, 6671, 7624, 11144, 13342, 15248, 22288, 26684, 53368, 106736, 189647, 379294, 758588, 1327529, 1517176, 2655058, 3034352, 5310116, 10620232, 21240464]

約数ペア:

[(1, 21240464), (2, 10620232), (4, 5310116), (7, 3034352), (8, 2655058), (14, 1517176), (16, 1327529), (28, 758588), (56, 379294), (112, 189647), (199, 106736), (398, 53368), (796, 26684), (953, 22288), (1393, 15248), (1592, 13342), (1906, 11144), (2786, 7624), (3184, 6671), (3812, 5572)]