28774557

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:498

約数の個数: 48

約数和(自身を含む): 51172992

約数和(自身を除く): 22398435

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 67, 119, 153, 201, 357, 401, 469, 603, 1071, 1139, 1203, 1407, 2807, 3417, 3609, 4221, 6817, 7973, 8421, 10251, 20451, 23919, 25263, 26867, 47719, 61353, 71757, 80601, 143157, 188069, 241803, 429471, 456739, 564207, 1370217, 1692621, 3197173, 4110651, 9591519, 28774557]

約数ペア:

[(1, 28774557), (3, 9591519), (7, 4110651), (9, 3197173), (17, 1692621), (21, 1370217), (51, 564207), (63, 456739), (67, 429471), (119, 241803), (153, 188069), (201, 143157), (357, 80601), (401, 71757), (469, 61353), (603, 47719), (1071, 26867), (1139, 25263), (1203, 23919), (1407, 20451), (2807, 10251), (3417, 8421), (3609, 7973), (4221, 6817)]