20344365

素因数分解:

$3^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{263}}^1$

素因数の和:471

約数の個数: 40

約数和(自身を含む): 36799488

約数和(自身を除く): 16455123

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 191, 263, 405, 573, 789, 955, 1315, 1719, 2367, 2865, 3945, 5157, 7101, 8595, 11835, 15471, 21303, 25785, 35505, 50233, 77355, 106515, 150699, 251165, 452097, 753495, 1356291, 2260485, 4068873, 6781455, 20344365]

約数ペア:

[(1, 20344365), (3, 6781455), (5, 4068873), (9, 2260485), (15, 1356291), (27, 753495), (45, 452097), (81, 251165), (135, 150699), (191, 106515), (263, 77355), (405, 50233), (573, 35505), (789, 25785), (955, 21303), (1315, 15471), (1719, 11835), (2367, 8595), (2865, 7101), (3945, 5157)]