20455011

素因数分解:

$3^7\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 11032989

約数列:

[1, 3, 9, 27, 47, 81, 141, 199, 243, 423, 597, 729, 1269, 1791, 2187, 3807, 5373, 9353, 11421, 16119, 28059, 34263, 48357, 84177, 102789, 145071, 252531, 435213, 757593, 2272779, 6818337, 20455011]

約数ペア:

[(1, 20455011), (3, 6818337), (9, 2272779), (27, 757593), (47, 435213), (81, 252531), (141, 145071), (199, 102789), (243, 84177), (423, 48357), (597, 34263), (729, 28059), (1269, 16119), (1791, 11421), (2187, 9353), (3807, 5373)]