19894791

素因数分解:

$3^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{3931}}^1$

素因数の和:4182

約数の個数: 16

約数和(自身を含む): 30449408

約数和(自身を除く): 10554617

約数列:

[1, 3, 7, 21, 241, 723, 1687, 3931, 5061, 11793, 27517, 82551, 947371, 2842113, 6631597, 19894791]

約数ペア:

[(1, 19894791), (3, 6631597), (7, 2842113), (21, 947371), (241, 82551), (723, 27517), (1687, 11793), (3931, 5061)]