18647824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89653}}^1$

素因数の和:89674

約数の個数: 20

約数和(自身を含む): 38909836

約数和(自身を除く): 20262012

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 89653, 179306, 358612, 717224, 1165489, 1434448, 2330978, 4661956, 9323912, 18647824]

約数ペア:

[(1, 18647824), (2, 9323912), (4, 4661956), (8, 2330978), (13, 1434448), (16, 1165489), (26, 717224), (52, 358612), (104, 179306), (208, 89653)]