7840980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^3\times {\mathrm{127}}^1$

素因数の和:163

約数の個数: 144

約数和(自身を含む): 27955200

約数和(自身を除く): 20114220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 127, 140, 147, 180, 196, 210, 245, 252, 254, 294, 315, 343, 381, 420, 441, 490, 508, 588, 630, 635, 686, 735, 762, 882, 889, 980, 1029, 1143, 1260, 1270, 1372, 1470, 1524, 1715, 1764, 1778, 1905, 2058, 2205, 2286, 2540, 2667, 2940, 3087, 3430, 3556, 3810, 4116, 4410, 4445, 4572, 5145, 5334, 5715, 6174, 6223, 6860, 7620, 8001, 8820, 8890, 10290, 10668, 11430, 12348, 12446, 13335, 15435, 16002, 17780, 18669, 20580, 22860, 24892, 26670, 30870, 31115, 32004, 37338, 40005, 43561, 53340, 56007, 61740, 62230, 74676, 80010, 87122, 93345, 112014, 124460, 130683, 160020, 174244, 186690, 217805, 224028, 261366, 280035, 373380, 392049, 435610, 522732, 560070, 653415, 784098, 871220, 1120140, 1306830, 1568196, 1960245, 2613660, 3920490, 7840980]

約数ペア:

[(1, 7840980), (2, 3920490), (3, 2613660), (4, 1960245), (5, 1568196), (6, 1306830), (7, 1120140), (9, 871220), (10, 784098), (12, 653415), (14, 560070), (15, 522732), (18, 435610), (20, 392049), (21, 373380), (28, 280035), (30, 261366), (35, 224028), (36, 217805), (42, 186690), (45, 174244), (49, 160020), (60, 130683), (63, 124460), (70, 112014), (84, 93345), (90, 87122), (98, 80010), (105, 74676), (126, 62230), (127, 61740), (140, 56007), (147, 53340), (180, 43561), (196, 40005), (210, 37338), (245, 32004), (252, 31115), (254, 30870), (294, 26670), (315, 24892), (343, 22860), (381, 20580), (420, 18669), (441, 17780), (490, 16002), (508, 15435), (588, 13335), (630, 12446), (635, 12348), (686, 11430), (735, 10668), (762, 10290), (882, 8890), (889, 8820), (980, 8001), (1029, 7620), (1143, 6860), (1260, 6223), (1270, 6174), (1372, 5715), (1470, 5334), (1524, 5145), (1715, 4572), (1764, 4445), (1778, 4410), (1905, 4116), (2058, 3810), (2205, 3556), (2286, 3430), (2540, 3087), (2667, 2940)]