18992547

素因数分解:

$3^2\times 7^2\times {\mathrm{43067}}^1$

素因数の和:43087

約数の個数: 18

約数和(自身を含む): 31913388

約数和(自身を除く): 12920841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43067, 129201, 301469, 387603, 904407, 2110283, 2713221, 6330849, 18992547]

約数ペア:

[(1, 18992547), (3, 6330849), (7, 2713221), (9, 2110283), (21, 904407), (49, 387603), (63, 301469), (147, 129201), (441, 43067)]