20578558

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1$

素因数の和:593

約数の個数: 64

約数和(自身を含む): 43706880

約数和(自身を除く): 23128322

約数列:

[1, 2, 7, 11, 13, 14, 19, 22, 26, 38, 77, 91, 133, 143, 154, 182, 209, 247, 266, 286, 418, 494, 541, 1001, 1082, 1463, 1729, 2002, 2717, 2926, 3458, 3787, 5434, 5951, 7033, 7574, 10279, 11902, 14066, 19019, 20558, 38038, 41657, 49231, 71953, 77363, 83314, 98462, 113069, 133627, 143906, 154726, 226138, 267254, 541541, 791483, 935389, 1083082, 1469897, 1582966, 1870778, 2939794, 10289279, 20578558]

約数ペア:

[(1, 20578558), (2, 10289279), (7, 2939794), (11, 1870778), (13, 1582966), (14, 1469897), (19, 1083082), (22, 935389), (26, 791483), (38, 541541), (77, 267254), (91, 226138), (133, 154726), (143, 143906), (154, 133627), (182, 113069), (209, 98462), (247, 83314), (266, 77363), (286, 71953), (418, 49231), (494, 41657), (541, 38038), (1001, 20558), (1082, 19019), (1463, 14066), (1729, 11902), (2002, 10279), (2717, 7574), (2926, 7033), (3458, 5951), (3787, 5434)]