21758660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:297

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 36302140

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 71, 77, 110, 140, 142, 154, 199, 220, 284, 308, 355, 385, 398, 497, 710, 770, 781, 796, 994, 995, 1393, 1420, 1540, 1562, 1988, 1990, 2189, 2485, 2786, 3124, 3905, 3980, 4378, 4970, 5467, 5572, 6965, 7810, 8756, 9940, 10934, 10945, 13930, 14129, 15323, 15620, 21868, 21890, 27335, 27860, 28258, 30646, 43780, 54670, 56516, 61292, 70645, 76615, 98903, 109340, 141290, 153230, 155419, 197806, 282580, 306460, 310838, 395612, 494515, 621676, 777095, 989030, 1087933, 1554190, 1978060, 2175866, 3108380, 4351732, 5439665, 10879330, 21758660]

約数ペア:

[(1, 21758660), (2, 10879330), (4, 5439665), (5, 4351732), (7, 3108380), (10, 2175866), (11, 1978060), (14, 1554190), (20, 1087933), (22, 989030), (28, 777095), (35, 621676), (44, 494515), (55, 395612), (70, 310838), (71, 306460), (77, 282580), (110, 197806), (140, 155419), (142, 153230), (154, 141290), (199, 109340), (220, 98903), (284, 76615), (308, 70645), (355, 61292), (385, 56516), (398, 54670), (497, 43780), (710, 30646), (770, 28258), (781, 27860), (796, 27335), (994, 21890), (995, 21868), (1393, 15620), (1420, 15323), (1540, 14129), (1562, 13930), (1988, 10945), (1990, 10934), (2189, 9940), (2485, 8756), (2786, 7810), (3124, 6965), (3905, 5572), (3980, 5467), (4378, 4970)]