640428

素因数分解:

$2^2\times 3^1\times {\mathrm{83}}^1\times {\mathrm{643}}^1$

素因数の和:733

約数の個数: 24

約数和(自身を含む): 1514688

約数和(自身を除く): 874260

約数列:

[1, 2, 3, 4, 6, 12, 83, 166, 249, 332, 498, 643, 996, 1286, 1929, 2572, 3858, 7716, 53369, 106738, 160107, 213476, 320214, 640428]

約数ペア:

[(1, 640428), (2, 320214), (3, 213476), (4, 160107), (6, 106738), (12, 53369), (83, 7716), (166, 3858), (249, 2572), (332, 1929), (498, 1286), (643, 996)]