28056987

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 52106496

約数和(自身を除く): 24049509

約数列:

[1, 3, 7, 9, 17, 21, 23, 51, 63, 67, 69, 119, 153, 161, 201, 207, 289, 357, 391, 469, 483, 603, 867, 1071, 1139, 1173, 1407, 1449, 1541, 2023, 2601, 2737, 3417, 3519, 4221, 4623, 6069, 6647, 7973, 8211, 10251, 10787, 13869, 18207, 19363, 19941, 23919, 24633, 26197, 32361, 46529, 58089, 59823, 71757, 78591, 97083, 135541, 139587, 174267, 183379, 235773, 406623, 418761, 445349, 550137, 1219869, 1336047, 1650411, 3117443, 4008141, 9352329, 28056987]

約数ペア:

[(1, 28056987), (3, 9352329), (7, 4008141), (9, 3117443), (17, 1650411), (21, 1336047), (23, 1219869), (51, 550137), (63, 445349), (67, 418761), (69, 406623), (119, 235773), (153, 183379), (161, 174267), (201, 139587), (207, 135541), (289, 97083), (357, 78591), (391, 71757), (469, 59823), (483, 58089), (603, 46529), (867, 32361), (1071, 26197), (1139, 24633), (1173, 23919), (1407, 19941), (1449, 19363), (1541, 18207), (2023, 13869), (2601, 10787), (2737, 10251), (3417, 8211), (3519, 7973), (4221, 6647), (4623, 6069)]