21493509

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{967}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 29736960

約数和(自身を除く): 8243451

約数列:

[1, 3, 31, 93, 239, 717, 967, 2901, 7409, 22227, 29977, 89931, 231113, 693339, 7164503, 21493509]

約数ペア:

[(1, 21493509), (3, 7164503), (31, 693339), (93, 231113), (239, 89931), (717, 29977), (967, 22227), (2901, 7409)]