21456705

素因数分解:

$3^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{3229}}^1$

素因数の和:3680

約数の個数: 16

約数和(自身を含む): 34418880

約数和(自身を除く): 12962175

約数列:

[1, 3, 5, 15, 443, 1329, 2215, 3229, 6645, 9687, 16145, 48435, 1430447, 4291341, 7152235, 21456705]

約数ペア:

[(1, 21456705), (3, 7152235), (5, 4291341), (15, 1430447), (443, 48435), (1329, 16145), (2215, 9687), (3229, 6645)]