1644291140

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{319901}}^1$

素因数の和:320167

約数の個数: 24

約数和(自身を含む): 3466458072

約数和(自身を除く): 1822166932

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 319901, 639802, 1279604, 1599505, 3199010, 6398020, 82214557, 164429114, 328858228, 411072785, 822145570, 1644291140]

約数ペア:

[(1, 1644291140), (2, 822145570), (4, 411072785), (5, 328858228), (10, 164429114), (20, 82214557), (257, 6398020), (514, 3199010), (1028, 1599505), (1285, 1279604), (2570, 639802), (5140, 319901)]