1998719920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:375

約数の個数: 160

約数和(自身を含む): 5052801600

約数和(自身を除く): 3054081680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 97, 109, 136, 139, 170, 194, 218, 272, 278, 340, 388, 436, 485, 545, 556, 680, 695, 776, 872, 970, 1090, 1112, 1360, 1390, 1552, 1649, 1744, 1853, 1940, 2180, 2224, 2363, 2780, 3298, 3706, 3880, 4360, 4726, 5560, 6596, 7412, 7760, 8245, 8720, 9265, 9452, 10573, 11120, 11815, 13192, 13483, 14824, 15151, 16490, 18530, 18904, 21146, 23630, 26384, 26966, 29648, 30302, 32980, 37060, 37808, 42292, 47260, 52865, 53932, 60604, 65960, 67415, 74120, 75755, 84584, 94520, 105730, 107864, 121208, 131920, 134830, 148240, 151510, 169168, 179741, 189040, 211460, 215728, 229211, 242416, 257567, 269660, 303020, 359482, 422920, 458422, 515134, 539320, 606040, 718964, 845840, 898705, 916844, 1030268, 1078640, 1146055, 1212080, 1287835, 1437928, 1469647, 1797410, 1833688, 2060536, 2292110, 2575670, 2875856, 2939294, 3594820, 3667376, 4121072, 4584220, 5151340, 5878588, 7189640, 7348235, 9168440, 10302680, 11757176, 14379280, 14696470, 18336880, 20605360, 23514352, 24983999, 29392940, 49967998, 58785880, 99935996, 117571760, 124919995, 199871992, 249839990, 399743984, 499679980, 999359960, 1998719920]

約数ペア:

[(1, 1998719920), (2, 999359960), (4, 499679980), (5, 399743984), (8, 249839990), (10, 199871992), (16, 124919995), (17, 117571760), (20, 99935996), (34, 58785880), (40, 49967998), (68, 29392940), (80, 24983999), (85, 23514352), (97, 20605360), (109, 18336880), (136, 14696470), (139, 14379280), (170, 11757176), (194, 10302680), (218, 9168440), (272, 7348235), (278, 7189640), (340, 5878588), (388, 5151340), (436, 4584220), (485, 4121072), (545, 3667376), (556, 3594820), (680, 2939294), (695, 2875856), (776, 2575670), (872, 2292110), (970, 2060536), (1090, 1833688), (1112, 1797410), (1360, 1469647), (1390, 1437928), (1552, 1287835), (1649, 1212080), (1744, 1146055), (1853, 1078640), (1940, 1030268), (2180, 916844), (2224, 898705), (2363, 845840), (2780, 718964), (3298, 606040), (3706, 539320), (3880, 515134), (4360, 458422), (4726, 422920), (5560, 359482), (6596, 303020), (7412, 269660), (7760, 257567), (8245, 242416), (8720, 229211), (9265, 215728), (9452, 211460), (10573, 189040), (11120, 179741), (11815, 169168), (13192, 151510), (13483, 148240), (14824, 134830), (15151, 131920), (16490, 121208), (18530, 107864), (18904, 105730), (21146, 94520), (23630, 84584), (26384, 75755), (26966, 74120), (29648, 67415), (30302, 65960), (32980, 60604), (37060, 53932), (37808, 52865), (42292, 47260)]