20490352

素因数分解:

$2^4\times {\mathrm{809}}^1\times {\mathrm{1583}}^1$

素因数の和:2400

約数の個数: 20

約数和(自身を含む): 39774240

約数和(自身を除く): 19283888

約数列:

[1, 2, 4, 8, 16, 809, 1583, 1618, 3166, 3236, 6332, 6472, 12664, 12944, 25328, 1280647, 2561294, 5122588, 10245176, 20490352]

約数ペア:

[(1, 20490352), (2, 10245176), (4, 5122588), (8, 2561294), (16, 1280647), (809, 25328), (1583, 12944), (1618, 12664), (3166, 6472), (3236, 6332)]