20999040

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{10937}}^1$

素因数の和:10959

約数の個数: 64

約数和(自身を含む): 66940560

約数和(自身を除く): 45941520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 10937, 21874, 32811, 43748, 54685, 65622, 87496, 109370, 131244, 164055, 174992, 218740, 262488, 328110, 349984, 437480, 524976, 656220, 699968, 874960, 1049952, 1312440, 1399936, 1749920, 2099904, 2624880, 3499840, 4199808, 5249760, 6999680, 10499520, 20999040]

約数ペア:

[(1, 20999040), (2, 10499520), (3, 6999680), (4, 5249760), (5, 4199808), (6, 3499840), (8, 2624880), (10, 2099904), (12, 1749920), (15, 1399936), (16, 1312440), (20, 1049952), (24, 874960), (30, 699968), (32, 656220), (40, 524976), (48, 437480), (60, 349984), (64, 328110), (80, 262488), (96, 218740), (120, 174992), (128, 164055), (160, 131244), (192, 109370), (240, 87496), (320, 65622), (384, 54685), (480, 43748), (640, 32811), (960, 21874), (1920, 10937)]