18901904

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2377}}^1$

素因数の和:2463

約数の個数: 40

約数和(自身を含む): 42461568

約数和(自身を除く): 23559664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2377, 3976, 4754, 7952, 9508, 16639, 19016, 33278, 38032, 66556, 133112, 168767, 266224, 337534, 675068, 1181369, 1350136, 2362738, 2700272, 4725476, 9450952, 18901904]

約数ペア:

[(1, 18901904), (2, 9450952), (4, 4725476), (7, 2700272), (8, 2362738), (14, 1350136), (16, 1181369), (28, 675068), (56, 337534), (71, 266224), (112, 168767), (142, 133112), (284, 66556), (497, 38032), (568, 33278), (994, 19016), (1136, 16639), (1988, 9508), (2377, 7952), (3976, 4754)]