18288081

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{877}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 30315584

約数和(自身を除く): 12027503

約数列:

[1, 3, 7, 9, 21, 63, 331, 877, 993, 2317, 2631, 2979, 6139, 6951, 7893, 18417, 20853, 55251, 290287, 870861, 2032009, 2612583, 6096027, 18288081]

約数ペア:

[(1, 18288081), (3, 6096027), (7, 2612583), (9, 2032009), (21, 870861), (63, 290287), (331, 55251), (877, 20853), (993, 18417), (2317, 7893), (2631, 6951), (2979, 6139)]