21405423

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{1201}}^1$

素因数の和:1674

約数の個数: 16

約数和(自身を含む): 30828896

約数和(自身を除く): 9423473

約数列:

[1, 3, 13, 39, 457, 1201, 1371, 3603, 5941, 15613, 17823, 46839, 548857, 1646571, 7135141, 21405423]

約数ペア:

[(1, 21405423), (3, 7135141), (13, 1646571), (39, 548857), (457, 46839), (1201, 17823), (1371, 15613), (3603, 5941)]