1664780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 3974880

約数和(自身を除く): 2310100

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 337, 380, 494, 674, 988, 1235, 1348, 1685, 2470, 3370, 4381, 4940, 6403, 6740, 8762, 12806, 17524, 21905, 25612, 32015, 43810, 64030, 83239, 87620, 128060, 166478, 332956, 416195, 832390, 1664780]

約数ペア:

[(1, 1664780), (2, 832390), (4, 416195), (5, 332956), (10, 166478), (13, 128060), (19, 87620), (20, 83239), (26, 64030), (38, 43810), (52, 32015), (65, 25612), (76, 21905), (95, 17524), (130, 12806), (190, 8762), (247, 6740), (260, 6403), (337, 4940), (380, 4381), (494, 3370), (674, 2470), (988, 1685), (1235, 1348)]