31440717

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^2$

素因数の和:172

約数の個数: 60

約数和(自身を含む): 59392608

約数和(自身を除く): 27951891

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 71, 77, 81, 99, 189, 213, 231, 297, 497, 567, 639, 693, 781, 891, 1491, 1917, 2079, 2343, 4473, 5041, 5467, 5751, 6237, 7029, 13419, 15123, 16401, 21087, 35287, 40257, 45369, 49203, 55451, 63261, 105861, 136107, 147609, 166353, 317583, 388157, 408321, 442827, 499059, 952749, 1164471, 1497177, 2858247, 3493413, 4491531, 10480239, 31440717]

約数ペア:

[(1, 31440717), (3, 10480239), (7, 4491531), (9, 3493413), (11, 2858247), (21, 1497177), (27, 1164471), (33, 952749), (63, 499059), (71, 442827), (77, 408321), (81, 388157), (99, 317583), (189, 166353), (213, 147609), (231, 136107), (297, 105861), (497, 63261), (567, 55451), (639, 49203), (693, 45369), (781, 40257), (891, 35287), (1491, 21087), (1917, 16401), (2079, 15123), (2343, 13419), (4473, 7029), (5041, 6237), (5467, 5751)]