21889712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{105239}}^1$

素因数の和:105260

約数の個数: 20

約数和(自身を含む): 45674160

約数和(自身を除く): 23784448

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 105239, 210478, 420956, 841912, 1368107, 1683824, 2736214, 5472428, 10944856, 21889712]

約数ペア:

[(1, 21889712), (2, 10944856), (4, 5472428), (8, 2736214), (13, 1683824), (16, 1368107), (26, 841912), (52, 420956), (104, 210478), (208, 105239)]