19786431

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{12907}}^1$

素因数の和:12990

約数の個数: 16

約数和(自身を含む): 30566144

約数和(自身を除く): 10779713

約数列:

[1, 3, 7, 21, 73, 219, 511, 1533, 12907, 38721, 90349, 271047, 942211, 2826633, 6595477, 19786431]

約数ペア:

[(1, 19786431), (3, 6595477), (7, 2826633), (21, 942211), (73, 271047), (219, 90349), (511, 38721), (1533, 12907)]