21038459

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{229}}^1$

素因数の和:470

約数の個数: 16

約数和(自身を含む): 23493120

約数和(自身を除く): 2454661

約数列:

[1, 13, 37, 191, 229, 481, 2483, 2977, 7067, 8473, 43739, 91871, 110149, 568607, 1618343, 21038459]

約数ペア:

[(1, 21038459), (13, 1618343), (37, 568607), (191, 110149), (229, 91871), (481, 43739), (2483, 8473), (2977, 7067)]