18900693

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{6977}}^1$

素因数の和:7033

約数の個数: 24

約数和(自身を含む): 31931328

約数和(自身を除く): 13030635

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 6977, 20931, 48839, 62793, 146517, 300011, 439551, 900033, 2100077, 2700099, 6300231, 18900693]

約数ペア:

[(1, 18900693), (3, 6300231), (7, 2700099), (9, 2100077), (21, 900033), (43, 439551), (63, 300011), (129, 146517), (301, 62793), (387, 48839), (903, 20931), (2709, 6977)]