18660740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3251}}^1$

素因数の和:3308

約数の個数: 48

約数和(自身を含む): 45892224

約数和(自身を除く): 27231484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3251, 5740, 6502, 13004, 16255, 22757, 32510, 45514, 65020, 91028, 113785, 133291, 227570, 266582, 455140, 533164, 666455, 933037, 1332910, 1866074, 2665820, 3732148, 4665185, 9330370, 18660740]

約数ペア:

[(1, 18660740), (2, 9330370), (4, 4665185), (5, 3732148), (7, 2665820), (10, 1866074), (14, 1332910), (20, 933037), (28, 666455), (35, 533164), (41, 455140), (70, 266582), (82, 227570), (140, 133291), (164, 113785), (205, 91028), (287, 65020), (410, 45514), (574, 32510), (820, 22757), (1148, 16255), (1435, 13004), (2870, 6502), (3251, 5740)]