21271040

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1187}}^1$

素因数の和:1217

約数の個数: 80

約数和(自身を含む): 58335552

約数和(自身を除く): 37064512

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1187, 1280, 1792, 2240, 2374, 2560, 3584, 4480, 4748, 5935, 8309, 8960, 9496, 11870, 16618, 17920, 18992, 23740, 33236, 37984, 41545, 47480, 66472, 75968, 83090, 94960, 132944, 151936, 166180, 189920, 265888, 303872, 332360, 379840, 531776, 607744, 664720, 759680, 1063552, 1329440, 1519360, 2127104, 2658880, 3038720, 4254208, 5317760, 10635520, 21271040]

約数ペア:

[(1, 21271040), (2, 10635520), (4, 5317760), (5, 4254208), (7, 3038720), (8, 2658880), (10, 2127104), (14, 1519360), (16, 1329440), (20, 1063552), (28, 759680), (32, 664720), (35, 607744), (40, 531776), (56, 379840), (64, 332360), (70, 303872), (80, 265888), (112, 189920), (128, 166180), (140, 151936), (160, 132944), (224, 94960), (256, 83090), (280, 75968), (320, 66472), (448, 47480), (512, 41545), (560, 37984), (640, 33236), (896, 23740), (1120, 18992), (1187, 17920), (1280, 16618), (1792, 11870), (2240, 9496), (2374, 8960), (2560, 8309), (3584, 5935), (4480, 4748)]