28401086

素因数分解:

$2^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{2179}}^1$

素因数の和:2221

約数の個数: 32

約数和(自身を含む): 52320000

約数和(自身を除く): 23918914

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 343, 686, 931, 1862, 2179, 4358, 6517, 13034, 15253, 30506, 41401, 82802, 106771, 213542, 289807, 579614, 747397, 1494794, 2028649, 4057298, 14200543, 28401086]

約数ペア:

[(1, 28401086), (2, 14200543), (7, 4057298), (14, 2028649), (19, 1494794), (38, 747397), (49, 579614), (98, 289807), (133, 213542), (266, 106771), (343, 82802), (686, 41401), (931, 30506), (1862, 15253), (2179, 13034), (4358, 6517)]