20938610

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{383}}^1$

素因数の和:479

約数の個数: 64

約数和(自身を含む): 47775744

約数和(自身を除く): 26837134

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 71, 77, 110, 142, 154, 355, 383, 385, 497, 710, 766, 770, 781, 994, 1562, 1915, 2485, 2681, 3830, 3905, 4213, 4970, 5362, 5467, 7810, 8426, 10934, 13405, 21065, 26810, 27193, 27335, 29491, 42130, 54386, 54670, 58982, 135965, 147455, 190351, 271930, 294910, 299123, 380702, 598246, 951755, 1495615, 1903510, 2093861, 2991230, 4187722, 10469305, 20938610]

約数ペア:

[(1, 20938610), (2, 10469305), (5, 4187722), (7, 2991230), (10, 2093861), (11, 1903510), (14, 1495615), (22, 951755), (35, 598246), (55, 380702), (70, 299123), (71, 294910), (77, 271930), (110, 190351), (142, 147455), (154, 135965), (355, 58982), (383, 54670), (385, 54386), (497, 42130), (710, 29491), (766, 27335), (770, 27193), (781, 26810), (994, 21065), (1562, 13405), (1915, 10934), (2485, 8426), (2681, 7810), (3830, 5467), (3905, 5362), (4213, 4970)]