21064960

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{2351}}^1$

素因数の和:2379

約数の個数: 72

約数和(自身を含む): 57689856

約数和(自身を除く): 36624896

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, 560, 640, 896, 1120, 1280, 1792, 2240, 2351, 4480, 4702, 8960, 9404, 11755, 16457, 18808, 23510, 32914, 37616, 47020, 65828, 75232, 82285, 94040, 131656, 150464, 164570, 188080, 263312, 300928, 329140, 376160, 526624, 601856, 658280, 752320, 1053248, 1316560, 1504640, 2106496, 2633120, 3009280, 4212992, 5266240, 10532480, 21064960]

約数ペア:

[(1, 21064960), (2, 10532480), (4, 5266240), (5, 4212992), (7, 3009280), (8, 2633120), (10, 2106496), (14, 1504640), (16, 1316560), (20, 1053248), (28, 752320), (32, 658280), (35, 601856), (40, 526624), (56, 376160), (64, 329140), (70, 300928), (80, 263312), (112, 188080), (128, 164570), (140, 150464), (160, 131656), (224, 94040), (256, 82285), (280, 75232), (320, 65828), (448, 47020), (560, 37616), (640, 32914), (896, 23510), (1120, 18808), (1280, 16457), (1792, 11755), (2240, 9404), (2351, 8960), (4480, 4702)]