21294381

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{1559}}^1$

素因数の和:1748

約数の個数: 16

約数和(自身を含む): 29577600

約数和(自身を除く): 8283219

約数列:

[1, 3, 29, 87, 157, 471, 1559, 4553, 4677, 13659, 45211, 135633, 244763, 734289, 7098127, 21294381]

約数ペア:

[(1, 21294381), (3, 7098127), (29, 734289), (87, 244763), (157, 135633), (471, 45211), (1559, 13659), (4553, 4677)]