81068780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311803}}^1$

素因数の和:311825

約数の個数: 24

約数和(自身を含む): 183340752

約数和(自身を除く): 102271972

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311803, 623606, 1247212, 1559015, 3118030, 4053439, 6236060, 8106878, 16213756, 20267195, 40534390, 81068780]

約数ペア:

[(1, 81068780), (2, 40534390), (4, 20267195), (5, 16213756), (10, 8106878), (13, 6236060), (20, 4053439), (26, 3118030), (52, 1559015), (65, 1247212), (130, 623606), (260, 311803)]