21440580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{719}}^1$

素因数の和:809

約数の個数: 96

約数和(自身を含む): 69672960

約数和(自身を除く): 48232380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 71, 84, 105, 140, 142, 210, 213, 284, 355, 420, 426, 497, 710, 719, 852, 994, 1065, 1420, 1438, 1491, 1988, 2130, 2157, 2485, 2876, 2982, 3595, 4260, 4314, 4970, 5033, 5964, 7190, 7455, 8628, 9940, 10066, 10785, 14380, 14910, 15099, 20132, 21570, 25165, 29820, 30198, 43140, 50330, 51049, 60396, 75495, 100660, 102098, 150990, 153147, 204196, 255245, 301980, 306294, 357343, 510490, 612588, 714686, 765735, 1020980, 1072029, 1429372, 1531470, 1786715, 2144058, 3062940, 3573430, 4288116, 5360145, 7146860, 10720290, 21440580]

約数ペア:

[(1, 21440580), (2, 10720290), (3, 7146860), (4, 5360145), (5, 4288116), (6, 3573430), (7, 3062940), (10, 2144058), (12, 1786715), (14, 1531470), (15, 1429372), (20, 1072029), (21, 1020980), (28, 765735), (30, 714686), (35, 612588), (42, 510490), (60, 357343), (70, 306294), (71, 301980), (84, 255245), (105, 204196), (140, 153147), (142, 150990), (210, 102098), (213, 100660), (284, 75495), (355, 60396), (420, 51049), (426, 50330), (497, 43140), (710, 30198), (719, 29820), (852, 25165), (994, 21570), (1065, 20132), (1420, 15099), (1438, 14910), (1491, 14380), (1988, 10785), (2130, 10066), (2157, 9940), (2485, 8628), (2876, 7455), (2982, 7190), (3595, 5964), (4260, 5033), (4314, 4970)]