12906020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{349}}^1$

素因数の和:444

約数の個数: 36

約数和(自身を含む): 27827100

約数和(自身を除く): 14921080

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 349, 430, 698, 860, 1396, 1745, 1849, 3490, 3698, 6980, 7396, 9245, 15007, 18490, 30014, 36980, 60028, 75035, 150070, 300140, 645301, 1290602, 2581204, 3226505, 6453010, 12906020]

約数ペア:

[(1, 12906020), (2, 6453010), (4, 3226505), (5, 2581204), (10, 1290602), (20, 645301), (43, 300140), (86, 150070), (172, 75035), (215, 60028), (349, 36980), (430, 30014), (698, 18490), (860, 15007), (1396, 9245), (1745, 7396), (1849, 6980), (3490, 3698)]