21497470

素因数分解:

$2^1\times 5^1\times {\mathrm{1103}}^1\times {\mathrm{1949}}^1$

素因数の和:3059

約数の個数: 16

約数和(自身を含む): 38750400

約数和(自身を除く): 17252930

約数列:

[1, 2, 5, 10, 1103, 1949, 2206, 3898, 5515, 9745, 11030, 19490, 2149747, 4299494, 10748735, 21497470]

約数ペア:

[(1, 21497470), (2, 10748735), (5, 4299494), (10, 2149747), (1103, 19490), (1949, 11030), (2206, 9745), (3898, 5515)]