16721826381

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{15880177}}^1$

素因数の和:15880202

約数の個数: 20

約数和(自身を含む): 26901021532

約数和(自身を除く): 10179195151

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 15880177, 47640531, 142921593, 206442301, 428764779, 619326903, 1286294337, 1857980709, 5573942127, 16721826381]

約数ペア:

[(1, 16721826381), (3, 5573942127), (9, 1857980709), (13, 1286294337), (27, 619326903), (39, 428764779), (81, 206442301), (117, 142921593), (351, 47640531), (1053, 15880177)]