19945731

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4027}}^1$

素因数の和:4170

約数の個数: 16

約数和(自身を含む): 28872704

約数和(自身を除く): 8926973

約数列:

[1, 3, 13, 39, 127, 381, 1651, 4027, 4953, 12081, 52351, 157053, 511429, 1534287, 6648577, 19945731]

約数ペア:

[(1, 19945731), (3, 6648577), (13, 1534287), (39, 511429), (127, 157053), (381, 52351), (1651, 12081), (4027, 4953)]