19998428

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{1051}}^1$

素因数の和:1193

約数の個数: 24

約数和(自身を含む): 36054144

約数和(自身を除く): 16055716

約数列:

[1, 2, 4, 67, 71, 134, 142, 268, 284, 1051, 2102, 4204, 4757, 9514, 19028, 70417, 74621, 140834, 149242, 281668, 298484, 4999607, 9999214, 19998428]

約数ペア:

[(1, 19998428), (2, 9999214), (4, 4999607), (67, 298484), (71, 281668), (134, 149242), (142, 140834), (268, 74621), (284, 70417), (1051, 19028), (2102, 9514), (4204, 4757)]