20485630

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 64

約数和(自身を含む): 42425856

約数和(自身を除く): 21940226

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 61, 71, 86, 110, 122, 142, 215, 305, 355, 430, 473, 610, 671, 710, 781, 946, 1342, 1562, 2365, 2623, 3053, 3355, 3905, 4331, 4730, 5246, 6106, 6710, 7810, 8662, 13115, 15265, 21655, 26230, 28853, 30530, 33583, 43310, 47641, 57706, 67166, 95282, 144265, 167915, 186233, 238205, 288530, 335830, 372466, 476410, 931165, 1862330, 2048563, 4097126, 10242815, 20485630]

約数ペア:

[(1, 20485630), (2, 10242815), (5, 4097126), (10, 2048563), (11, 1862330), (22, 931165), (43, 476410), (55, 372466), (61, 335830), (71, 288530), (86, 238205), (110, 186233), (122, 167915), (142, 144265), (215, 95282), (305, 67166), (355, 57706), (430, 47641), (473, 43310), (610, 33583), (671, 30530), (710, 28853), (781, 26230), (946, 21655), (1342, 15265), (1562, 13115), (2365, 8662), (2623, 7810), (3053, 6710), (3355, 6106), (3905, 5246), (4331, 4730)]