31281201

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 57753600

約数和(自身を除く): 26472399

約数列:

[1, 3, 7, 9, 19, 21, 27, 31, 57, 63, 93, 133, 171, 189, 217, 279, 281, 399, 513, 589, 651, 837, 843, 1197, 1767, 1953, 1967, 2529, 3591, 4123, 5301, 5339, 5859, 5901, 7587, 8711, 12369, 15903, 16017, 17703, 26133, 37107, 37373, 48051, 53109, 60977, 78399, 111321, 112119, 144153, 165509, 182931, 235197, 336357, 496527, 548793, 1009071, 1158563, 1489581, 1646379, 3475689, 4468743, 10427067, 31281201]

約数ペア:

[(1, 31281201), (3, 10427067), (7, 4468743), (9, 3475689), (19, 1646379), (21, 1489581), (27, 1158563), (31, 1009071), (57, 548793), (63, 496527), (93, 336357), (133, 235197), (171, 182931), (189, 165509), (217, 144153), (279, 112119), (281, 111321), (399, 78399), (513, 60977), (589, 53109), (651, 48051), (837, 37373), (843, 37107), (1197, 26133), (1767, 17703), (1953, 16017), (1967, 15903), (2529, 12369), (3591, 8711), (4123, 7587), (5301, 5901), (5339, 5859)]