20127318645

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{37}}^2\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:420

約数の個数: 144

約数和(自身を含む): 39126846528

約数和(自身を除く): 18999527883

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 49, 83, 105, 111, 147, 185, 241, 245, 249, 259, 415, 555, 581, 723, 735, 777, 1205, 1245, 1295, 1369, 1687, 1743, 1813, 2905, 3071, 3615, 3885, 4067, 4107, 5061, 5439, 6845, 8435, 8715, 8917, 9065, 9213, 9583, 11809, 12201, 15355, 20003, 20335, 20535, 21497, 25305, 26751, 27195, 28749, 35427, 44585, 46065, 47915, 59045, 60009, 61005, 62419, 64491, 67081, 100015, 107485, 113627, 133755, 140021, 143745, 150479, 177135, 187257, 201243, 300045, 312095, 322455, 329929, 335405, 340881, 420063, 436933, 451437, 568135, 700105, 740111, 752395, 795389, 936285, 980147, 989787, 1006215, 1310799, 1649645, 1704405, 2100315, 2184665, 2220333, 2257185, 2309503, 2386167, 2940441, 3700555, 3976945, 4900735, 4948935, 5180777, 5567723, 6553995, 6928509, 11101665, 11547515, 11930835, 14702205, 15542331, 16166521, 16703169, 25903885, 27384107, 27838615, 34642545, 36265439, 48499563, 77711655, 80832605, 82152321, 83515845, 108796317, 136920535, 181327195, 191688749, 242497815, 410761605, 543981585, 575066247, 958443745, 1341821243, 2875331235, 4025463729, 6709106215, 20127318645]

約数ペア:

[(1, 20127318645), (3, 6709106215), (5, 4025463729), (7, 2875331235), (15, 1341821243), (21, 958443745), (35, 575066247), (37, 543981585), (49, 410761605), (83, 242497815), (105, 191688749), (111, 181327195), (147, 136920535), (185, 108796317), (241, 83515845), (245, 82152321), (249, 80832605), (259, 77711655), (415, 48499563), (555, 36265439), (581, 34642545), (723, 27838615), (735, 27384107), (777, 25903885), (1205, 16703169), (1245, 16166521), (1295, 15542331), (1369, 14702205), (1687, 11930835), (1743, 11547515), (1813, 11101665), (2905, 6928509), (3071, 6553995), (3615, 5567723), (3885, 5180777), (4067, 4948935), (4107, 4900735), (5061, 3976945), (5439, 3700555), (6845, 2940441), (8435, 2386167), (8715, 2309503), (8917, 2257185), (9065, 2220333), (9213, 2184665), (9583, 2100315), (11809, 1704405), (12201, 1649645), (15355, 1310799), (20003, 1006215), (20335, 989787), (20535, 980147), (21497, 936285), (25305, 795389), (26751, 752395), (27195, 740111), (28749, 700105), (35427, 568135), (44585, 451437), (46065, 436933), (47915, 420063), (59045, 340881), (60009, 335405), (61005, 329929), (62419, 322455), (64491, 312095), (67081, 300045), (100015, 201243), (107485, 187257), (113627, 177135), (133755, 150479), (140021, 143745)]