21162257

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{193}}^1\times {\mathrm{199}}^1$

素因数の和:440

約数の個数: 16

約数和(自身を含む): 23280000

約数和(自身を除く): 2117743

約数列:

[1, 19, 29, 193, 199, 551, 3667, 3781, 5597, 5771, 38407, 106343, 109649, 729733, 1113803, 21162257]

約数ペア:

[(1, 21162257), (19, 1113803), (29, 729733), (193, 109649), (199, 106343), (551, 38407), (3667, 5771), (3781, 5597)]