21119560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6857}}^1$

素因数の和:6886

約数の個数: 64

約数和(自身を含む): 59253120

約数和(自身を除く): 38133560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6857, 13714, 27428, 34285, 47999, 54856, 68570, 75427, 95998, 137140, 150854, 191996, 239995, 274280, 301708, 377135, 383992, 479990, 527989, 603416, 754270, 959980, 1055978, 1508540, 1919960, 2111956, 2639945, 3017080, 4223912, 5279890, 10559780, 21119560]

約数ペア:

[(1, 21119560), (2, 10559780), (4, 5279890), (5, 4223912), (7, 3017080), (8, 2639945), (10, 2111956), (11, 1919960), (14, 1508540), (20, 1055978), (22, 959980), (28, 754270), (35, 603416), (40, 527989), (44, 479990), (55, 383992), (56, 377135), (70, 301708), (77, 274280), (88, 239995), (110, 191996), (140, 150854), (154, 137140), (220, 95998), (280, 75427), (308, 68570), (385, 54856), (440, 47999), (616, 34285), (770, 27428), (1540, 13714), (3080, 6857)]