21355185

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23339}}^1$

素因数の和:23408

約数の個数: 16

約数和(自身を含む): 34729920

約数和(自身を除く): 13374735

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 23339, 70017, 116695, 350085, 1423679, 4271037, 7118395, 21355185]

約数ペア:

[(1, 21355185), (3, 7118395), (5, 4271037), (15, 1423679), (61, 350085), (183, 116695), (305, 70017), (915, 23339)]