646984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{6221}}^1$

素因数の和:6240

約数の個数: 16

約数和(自身を含む): 1306620

約数和(自身を除く): 659636

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 6221, 12442, 24884, 49768, 80873, 161746, 323492, 646984]

約数ペア:

[(1, 646984), (2, 323492), (4, 161746), (8, 80873), (13, 49768), (26, 24884), (52, 12442), (104, 6221)]