21890913

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{15427}}^1$

素因数の和:15484

約数の個数: 16

約数和(自身を含む): 32583936

約数和(自身を除く): 10693023

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 15427, 46281, 169697, 509091, 663361, 1990083, 7296971, 21890913]

約数ペア:

[(1, 21890913), (3, 7296971), (11, 1990083), (33, 663361), (43, 509091), (129, 169697), (473, 46281), (1419, 15427)]