20178391086

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{489743}}^1$

素因数の和:489870

約数の個数: 64

約数和(自身を含む): 51716966400

約数和(自身を除く): 31538575314

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 109, 126, 189, 218, 327, 378, 654, 763, 981, 1526, 1962, 2289, 2943, 4578, 5886, 6867, 13734, 20601, 41202, 489743, 979486, 1469229, 2938458, 3428201, 4407687, 6856402, 8815374, 10284603, 13223061, 20569206, 26446122, 30853809, 53381987, 61707618, 92561427, 106763974, 160145961, 185122854, 320291922, 373673909, 480437883, 747347818, 960875766, 1121021727, 1441313649, 2242043454, 2882627298, 3363065181, 6726130362, 10089195543, 20178391086]

約数ペア:

[(1, 20178391086), (2, 10089195543), (3, 6726130362), (6, 3363065181), (7, 2882627298), (9, 2242043454), (14, 1441313649), (18, 1121021727), (21, 960875766), (27, 747347818), (42, 480437883), (54, 373673909), (63, 320291922), (109, 185122854), (126, 160145961), (189, 106763974), (218, 92561427), (327, 61707618), (378, 53381987), (654, 30853809), (763, 26446122), (981, 20569206), (1526, 13223061), (1962, 10284603), (2289, 8815374), (2943, 6856402), (4578, 4407687), (5886, 3428201), (6867, 2938458), (13734, 1469229), (20601, 979486), (41202, 489743)]