19814828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 39782400

約数和(自身を除く): 19967572

約数列:

[1, 2, 4, 11, 22, 31, 44, 62, 73, 124, 146, 199, 292, 341, 398, 682, 796, 803, 1364, 1606, 2189, 2263, 3212, 4378, 4526, 6169, 8756, 9052, 12338, 14527, 24676, 24893, 29054, 49786, 58108, 67859, 99572, 135718, 159797, 271436, 319594, 450337, 639188, 900674, 1801348, 4953707, 9907414, 19814828]

約数ペア:

[(1, 19814828), (2, 9907414), (4, 4953707), (11, 1801348), (22, 900674), (31, 639188), (44, 450337), (62, 319594), (73, 271436), (124, 159797), (146, 135718), (199, 99572), (292, 67859), (341, 58108), (398, 49786), (682, 29054), (796, 24893), (803, 24676), (1364, 14527), (1606, 12338), (2189, 9052), (2263, 8756), (3212, 6169), (4378, 4526)]