21218079

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{2371}}^1$

素因数の和:2550

約数の個数: 16

約数和(自身を含む): 29982080

約数和(自身を除く): 8764001

約数列:

[1, 3, 19, 57, 157, 471, 2371, 2983, 7113, 8949, 45049, 135147, 372247, 1116741, 7072693, 21218079]

約数ペア:

[(1, 21218079), (3, 7072693), (19, 1116741), (57, 372247), (157, 135147), (471, 45049), (2371, 8949), (2983, 7113)]