12816620

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1259}}^1$

素因数の和:1777

約数の個数: 24

約数和(自身を含む): 26989200

約数和(自身を除く): 14172580

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 1259, 2036, 2518, 2545, 5036, 5090, 6295, 10180, 12590, 25180, 640831, 1281662, 2563324, 3204155, 6408310, 12816620]

約数ペア:

[(1, 12816620), (2, 6408310), (4, 3204155), (5, 2563324), (10, 1281662), (20, 640831), (509, 25180), (1018, 12590), (1259, 10180), (2036, 6295), (2518, 5090), (2545, 5036)]