18980922896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91254437}}^1$

素因数の和:91254458

約数の個数: 20

約数和(自身を含む): 39604426092

約数和(自身を除く): 20623503196

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91254437, 182508874, 365017748, 730035496, 1186307681, 1460070992, 2372615362, 4745230724, 9490461448, 18980922896]

約数ペア:

[(1, 18980922896), (2, 9490461448), (4, 4745230724), (8, 2372615362), (13, 1460070992), (16, 1186307681), (26, 730035496), (52, 365017748), (104, 182508874), (208, 91254437)]