20689214

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 41717760

約数和(自身を除く): 21028546

約数列:

[1, 2, 7, 13, 14, 19, 26, 31, 38, 62, 91, 133, 182, 193, 217, 247, 266, 386, 403, 434, 494, 589, 806, 1178, 1351, 1729, 2509, 2702, 2821, 3458, 3667, 4123, 5018, 5642, 5983, 7334, 7657, 8246, 11966, 15314, 17563, 25669, 35126, 41881, 47671, 51338, 53599, 77779, 83762, 95342, 107198, 113677, 155558, 227354, 333697, 544453, 667394, 795739, 1088906, 1477801, 1591478, 2955602, 10344607, 20689214]

約数ペア:

[(1, 20689214), (2, 10344607), (7, 2955602), (13, 1591478), (14, 1477801), (19, 1088906), (26, 795739), (31, 667394), (38, 544453), (62, 333697), (91, 227354), (133, 155558), (182, 113677), (193, 107198), (217, 95342), (247, 83762), (266, 77779), (386, 53599), (403, 51338), (434, 47671), (494, 41881), (589, 35126), (806, 25669), (1178, 17563), (1351, 15314), (1729, 11966), (2509, 8246), (2702, 7657), (2821, 7334), (3458, 5983), (3667, 5642), (4123, 5018)]