31139955

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:102

約数の個数: 144

約数和(自身を含む): 73032960

約数和(自身を除く): 41893005

約数列:

[1, 3, 5, 7, 9, 11, 15, 19, 21, 33, 35, 43, 45, 55, 57, 63, 77, 95, 99, 105, 121, 129, 133, 165, 171, 209, 215, 231, 285, 301, 315, 363, 385, 387, 399, 473, 495, 605, 627, 645, 665, 693, 817, 847, 855, 903, 1045, 1089, 1155, 1197, 1419, 1463, 1505, 1815, 1881, 1935, 1995, 2299, 2365, 2451, 2541, 2709, 3135, 3311, 3465, 4085, 4235, 4257, 4389, 4515, 5203, 5445, 5719, 5985, 6897, 7095, 7315, 7353, 7623, 8987, 9405, 9933, 11495, 12255, 12705, 13167, 13545, 15609, 16093, 16555, 17157, 20691, 21285, 21945, 26015, 26961, 28595, 29799, 34485, 36421, 36765, 38115, 44935, 46827, 48279, 49665, 51471, 62909, 65835, 78045, 80465, 80883, 85785, 98857, 103455, 109263, 134805, 144837, 148995, 182105, 188727, 234135, 241395, 257355, 296571, 314545, 327789, 404415, 494285, 546315, 566181, 691999, 724185, 889713, 943635, 1482855, 1638945, 2075997, 2830905, 3459995, 4448565, 6227991, 10379985, 31139955]

約数ペア:

[(1, 31139955), (3, 10379985), (5, 6227991), (7, 4448565), (9, 3459995), (11, 2830905), (15, 2075997), (19, 1638945), (21, 1482855), (33, 943635), (35, 889713), (43, 724185), (45, 691999), (55, 566181), (57, 546315), (63, 494285), (77, 404415), (95, 327789), (99, 314545), (105, 296571), (121, 257355), (129, 241395), (133, 234135), (165, 188727), (171, 182105), (209, 148995), (215, 144837), (231, 134805), (285, 109263), (301, 103455), (315, 98857), (363, 85785), (385, 80883), (387, 80465), (399, 78045), (473, 65835), (495, 62909), (605, 51471), (627, 49665), (645, 48279), (665, 46827), (693, 44935), (817, 38115), (847, 36765), (855, 36421), (903, 34485), (1045, 29799), (1089, 28595), (1155, 26961), (1197, 26015), (1419, 21945), (1463, 21285), (1505, 20691), (1815, 17157), (1881, 16555), (1935, 16093), (1995, 15609), (2299, 13545), (2365, 13167), (2451, 12705), (2541, 12255), (2709, 11495), (3135, 9933), (3311, 9405), (3465, 8987), (4085, 7623), (4235, 7353), (4257, 7315), (4389, 7095), (4515, 6897), (5203, 5985), (5445, 5719)]