21303680

素因数分解:

$2^7\times 5^1\times {\mathrm{33287}}^1$

素因数の和:33306

約数の個数: 32

約数和(自身を含む): 50930640

約数和(自身を除く): 29626960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33287, 66574, 133148, 166435, 266296, 332870, 532592, 665740, 1065184, 1331480, 2130368, 2662960, 4260736, 5325920, 10651840, 21303680]

約数ペア:

[(1, 21303680), (2, 10651840), (4, 5325920), (5, 4260736), (8, 2662960), (10, 2130368), (16, 1331480), (20, 1065184), (32, 665740), (40, 532592), (64, 332870), (80, 266296), (128, 166435), (160, 133148), (320, 66574), (640, 33287)]