28204820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6947}}^1$

素因数の和:6992

約数の個数: 48

約数和(自身を含む): 70035840

約数和(自身を除く): 41831020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 6947, 13894, 27788, 34735, 48629, 69470, 97258, 138940, 194516, 201463, 243145, 402926, 486290, 805852, 972580, 1007315, 1410241, 2014630, 2820482, 4029260, 5640964, 7051205, 14102410, 28204820]

約数ペア:

[(1, 28204820), (2, 14102410), (4, 7051205), (5, 5640964), (7, 4029260), (10, 2820482), (14, 2014630), (20, 1410241), (28, 1007315), (29, 972580), (35, 805852), (58, 486290), (70, 402926), (116, 243145), (140, 201463), (145, 194516), (203, 138940), (290, 97258), (406, 69470), (580, 48629), (812, 34735), (1015, 27788), (2030, 13894), (4060, 6947)]