21256992

素因数分解:

$2^5\times 3^4\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 120

約数和(自身を含む): 64033200

約数和(自身を除く): 42776208

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 59, 72, 81, 96, 108, 118, 139, 144, 162, 177, 216, 236, 278, 288, 324, 354, 417, 432, 472, 531, 556, 648, 708, 834, 864, 944, 1062, 1112, 1251, 1296, 1416, 1593, 1668, 1888, 2124, 2224, 2502, 2592, 2832, 3186, 3336, 3753, 4248, 4448, 4779, 5004, 5664, 6372, 6672, 7506, 8201, 8496, 9558, 10008, 11259, 12744, 13344, 15012, 16402, 16992, 19116, 20016, 22518, 24603, 25488, 30024, 32804, 38232, 40032, 45036, 49206, 50976, 60048, 65608, 73809, 76464, 90072, 98412, 120096, 131216, 147618, 152928, 180144, 196824, 221427, 262432, 295236, 360288, 393648, 442854, 590472, 664281, 787296, 885708, 1180944, 1328562, 1771416, 2361888, 2657124, 3542832, 5314248, 7085664, 10628496, 21256992]

約数ペア:

[(1, 21256992), (2, 10628496), (3, 7085664), (4, 5314248), (6, 3542832), (8, 2657124), (9, 2361888), (12, 1771416), (16, 1328562), (18, 1180944), (24, 885708), (27, 787296), (32, 664281), (36, 590472), (48, 442854), (54, 393648), (59, 360288), (72, 295236), (81, 262432), (96, 221427), (108, 196824), (118, 180144), (139, 152928), (144, 147618), (162, 131216), (177, 120096), (216, 98412), (236, 90072), (278, 76464), (288, 73809), (324, 65608), (354, 60048), (417, 50976), (432, 49206), (472, 45036), (531, 40032), (556, 38232), (648, 32804), (708, 30024), (834, 25488), (864, 24603), (944, 22518), (1062, 20016), (1112, 19116), (1251, 16992), (1296, 16402), (1416, 15012), (1593, 13344), (1668, 12744), (1888, 11259), (2124, 10008), (2224, 9558), (2502, 8496), (2592, 8201), (2832, 7506), (3186, 6672), (3336, 6372), (3753, 5664), (4248, 5004), (4448, 4779)]