21385566

素因数分解:

$2^1\times 3^3\times {\mathrm{396029}}^1$

素因数の和:396040

約数の個数: 16

約数和(自身を含む): 47523600

約数和(自身を除く): 26138034

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 396029, 792058, 1188087, 2376174, 3564261, 7128522, 10692783, 21385566]

約数ペア:

[(1, 21385566), (2, 10692783), (3, 7128522), (6, 3564261), (9, 2376174), (18, 1188087), (27, 792058), (54, 396029)]