20648888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{541}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 41885760

約数和(自身を除く): 21236872

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 367, 541, 734, 1082, 1468, 2164, 2936, 4328, 4771, 7033, 9542, 14066, 19084, 28132, 38168, 56264, 198547, 397094, 794188, 1588376, 2581111, 5162222, 10324444, 20648888]

約数ペア:

[(1, 20648888), (2, 10324444), (4, 5162222), (8, 2581111), (13, 1588376), (26, 794188), (52, 397094), (104, 198547), (367, 56264), (541, 38168), (734, 28132), (1082, 19084), (1468, 14066), (2164, 9542), (2936, 7033), (4328, 4771)]