19993136

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6343}}^1$

素因数の和:6548

約数の個数: 20

約数和(自身を含む): 38939472

約数和(自身を除く): 18946336

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6343, 12686, 25372, 50744, 101488, 1249571, 2499142, 4998284, 9996568, 19993136]

約数ペア:

[(1, 19993136), (2, 9996568), (4, 4998284), (8, 2499142), (16, 1249571), (197, 101488), (394, 50744), (788, 25372), (1576, 12686), (3152, 6343)]