20721792

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{593}}^1$

素因数の和:630

約数の個数: 128

約数和(自身を含む): 67858560

約数和(自身を除く): 47136768

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 52, 56, 64, 78, 84, 91, 96, 104, 112, 128, 156, 168, 182, 192, 208, 224, 273, 312, 336, 364, 384, 416, 448, 546, 593, 624, 672, 728, 832, 896, 1092, 1186, 1248, 1344, 1456, 1664, 1779, 2184, 2372, 2496, 2688, 2912, 3558, 4151, 4368, 4744, 4992, 5824, 7116, 7709, 8302, 8736, 9488, 11648, 12453, 14232, 15418, 16604, 17472, 18976, 23127, 24906, 28464, 30836, 33208, 34944, 37952, 46254, 49812, 53963, 56928, 61672, 66416, 75904, 92508, 99624, 107926, 113856, 123344, 132832, 161889, 185016, 199248, 215852, 227712, 246688, 265664, 323778, 370032, 398496, 431704, 493376, 531328, 647556, 740064, 796992, 863408, 986752, 1295112, 1480128, 1593984, 1726816, 2590224, 2960256, 3453632, 5180448, 6907264, 10360896, 20721792]

約数ペア:

[(1, 20721792), (2, 10360896), (3, 6907264), (4, 5180448), (6, 3453632), (7, 2960256), (8, 2590224), (12, 1726816), (13, 1593984), (14, 1480128), (16, 1295112), (21, 986752), (24, 863408), (26, 796992), (28, 740064), (32, 647556), (39, 531328), (42, 493376), (48, 431704), (52, 398496), (56, 370032), (64, 323778), (78, 265664), (84, 246688), (91, 227712), (96, 215852), (104, 199248), (112, 185016), (128, 161889), (156, 132832), (168, 123344), (182, 113856), (192, 107926), (208, 99624), (224, 92508), (273, 75904), (312, 66416), (336, 61672), (364, 56928), (384, 53963), (416, 49812), (448, 46254), (546, 37952), (593, 34944), (624, 33208), (672, 30836), (728, 28464), (832, 24906), (896, 23127), (1092, 18976), (1186, 17472), (1248, 16604), (1344, 15418), (1456, 14232), (1664, 12453), (1779, 11648), (2184, 9488), (2372, 8736), (2496, 8302), (2688, 7709), (2912, 7116), (3558, 5824), (4151, 4992), (4368, 4744)]