18999994

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{839}}^1$

素因数の和:934

約数の個数: 24

約数和(自身を含む): 31358880

約数和(自身を除く): 12358886

約数列:

[1, 2, 13, 26, 67, 134, 169, 338, 839, 871, 1678, 1742, 10907, 11323, 21814, 22646, 56213, 112426, 141791, 283582, 730769, 1461538, 9499997, 18999994]

約数ペア:

[(1, 18999994), (2, 9499997), (13, 1461538), (26, 730769), (67, 283582), (134, 141791), (169, 112426), (338, 56213), (839, 22646), (871, 21814), (1678, 11323), (1742, 10907)]