21101229

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13711}}^1$

素因数の和:13742

約数の個数: 20

約数和(自身を含む): 33183040

約数和(自身を除く): 12081811

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13711, 41133, 123399, 260509, 370197, 781527, 1110591, 2344581, 7033743, 21101229]

約数ペア:

[(1, 21101229), (3, 7033743), (9, 2344581), (19, 1110591), (27, 781527), (57, 370197), (81, 260509), (171, 123399), (513, 41133), (1539, 13711)]