644328260

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{285101}}^1$

素因数の和:285223

約数の個数: 24

約数和(自身を含む): 1365068376

約数和(自身を除く): 720740116

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 285101, 570202, 1140404, 1425505, 2851010, 5702020, 32216413, 64432826, 128865652, 161082065, 322164130, 644328260]

約数ペア:

[(1, 644328260), (2, 322164130), (4, 161082065), (5, 128865652), (10, 64432826), (20, 32216413), (113, 5702020), (226, 2851010), (452, 1425505), (565, 1140404), (1130, 570202), (2260, 285101)]