21755318

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1997}}^1$

素因数の和:2431

約数の個数: 16

約数和(自身を含む): 35244720

約数和(自身を除く): 13489402

約数列:

[1, 2, 13, 26, 419, 838, 1997, 3994, 5447, 10894, 25961, 51922, 836743, 1673486, 10877659, 21755318]

約数ペア:

[(1, 21755318), (2, 10877659), (13, 1673486), (26, 836743), (419, 51922), (838, 25961), (1997, 10894), (3994, 5447)]