2144840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 5111100

約数和(自身を除く): 2966260

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 43, 58, 86, 116, 145, 172, 215, 232, 290, 344, 430, 580, 860, 1160, 1247, 1720, 1849, 2494, 3698, 4988, 6235, 7396, 9245, 9976, 12470, 14792, 18490, 24940, 36980, 49880, 53621, 73960, 107242, 214484, 268105, 428968, 536210, 1072420, 2144840]

約数ペア:

[(1, 2144840), (2, 1072420), (4, 536210), (5, 428968), (8, 268105), (10, 214484), (20, 107242), (29, 73960), (40, 53621), (43, 49880), (58, 36980), (86, 24940), (116, 18490), (145, 14792), (172, 12470), (215, 9976), (232, 9245), (290, 7396), (344, 6235), (430, 4988), (580, 3698), (860, 2494), (1160, 1849), (1247, 1720)]