2556666

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{197}}^1$

素因数の和:315

約数の個数: 48

約数和(自身を含む): 6424704

約数和(自身を除く): 3868038

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 103, 126, 197, 206, 309, 394, 591, 618, 721, 927, 1182, 1379, 1442, 1773, 1854, 2163, 2758, 3546, 4137, 4326, 6489, 8274, 12411, 12978, 20291, 24822, 40582, 60873, 121746, 142037, 182619, 284074, 365238, 426111, 852222, 1278333, 2556666]

約数ペア:

[(1, 2556666), (2, 1278333), (3, 852222), (6, 426111), (7, 365238), (9, 284074), (14, 182619), (18, 142037), (21, 121746), (42, 60873), (63, 40582), (103, 24822), (126, 20291), (197, 12978), (206, 12411), (309, 8274), (394, 6489), (591, 4326), (618, 4137), (721, 3546), (927, 2758), (1182, 2163), (1379, 1854), (1442, 1773)]