18519081

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{647}}^1$

素因数の和:733

約数の個数: 32

約数和(自身を含む): 29859840

約数和(自身を除く): 11340759

約数列:

[1, 3, 7, 21, 29, 47, 87, 141, 203, 329, 609, 647, 987, 1363, 1941, 4089, 4529, 9541, 13587, 18763, 28623, 30409, 56289, 91227, 131341, 212863, 394023, 638589, 881861, 2645583, 6173027, 18519081]

約数ペア:

[(1, 18519081), (3, 6173027), (7, 2645583), (21, 881861), (29, 638589), (47, 394023), (87, 212863), (141, 131341), (203, 91227), (329, 56289), (609, 30409), (647, 28623), (987, 18763), (1363, 13587), (1941, 9541), (4089, 4529)]