18142173

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 31647616

約数和(自身を除く): 13505443

約数列:

[1, 3, 7, 9, 21, 37, 43, 63, 111, 129, 181, 259, 301, 333, 387, 543, 777, 903, 1267, 1591, 1629, 2331, 2709, 3801, 4773, 6697, 7783, 11137, 11403, 14319, 20091, 23349, 33411, 46879, 54481, 60273, 70047, 100233, 140637, 163443, 287971, 421911, 490329, 863913, 2015797, 2591739, 6047391, 18142173]

約数ペア:

[(1, 18142173), (3, 6047391), (7, 2591739), (9, 2015797), (21, 863913), (37, 490329), (43, 421911), (63, 287971), (111, 163443), (129, 140637), (181, 100233), (259, 70047), (301, 60273), (333, 54481), (387, 46879), (543, 33411), (777, 23349), (903, 20091), (1267, 14319), (1591, 11403), (1629, 11137), (2331, 7783), (2709, 6697), (3801, 4773)]