19987708

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{5737}}^1$

素因数の和:5821

約数の個数: 24

約数和(自身を含む): 38238032

約数和(自身を除く): 18250324

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 5737, 11474, 22948, 74581, 149162, 298324, 384379, 768758, 1537516, 4996927, 9993854, 19987708]

約数ペア:

[(1, 19987708), (2, 9993854), (4, 4996927), (13, 1537516), (26, 768758), (52, 384379), (67, 298324), (134, 149162), (268, 74581), (871, 22948), (1742, 11474), (3484, 5737)]