81538965

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42139}}^1$

素因数の和:42193

約数の個数: 24

約数和(自身を含む): 144624480

約数和(自身を除く): 63085515

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 42139, 126417, 210695, 379251, 632085, 1811977, 1896255, 5435931, 9059885, 16307793, 27179655, 81538965]

約数ペア:

[(1, 81538965), (3, 27179655), (5, 16307793), (9, 9059885), (15, 5435931), (43, 1896255), (45, 1811977), (129, 632085), (215, 379251), (387, 210695), (645, 126417), (1935, 42139)]