18631221

素因数分解:

$3^1\times 7^2\times {\mathrm{126743}}^1$

素因数の和:126760

約数の個数: 12

約数和(自身を含む): 28897632

約数和(自身を除く): 10266411

約数列:

[1, 3, 7, 21, 49, 147, 126743, 380229, 887201, 2661603, 6210407, 18631221]

約数ペア:

[(1, 18631221), (3, 6210407), (7, 2661603), (21, 887201), (49, 380229), (147, 126743)]