397788478

素因数分解:

$2^1\times {\mathrm{41}}^2\times {\mathrm{179}}^1\times {\mathrm{661}}^1$

素因数の和:924

約数の個数: 24

約数和(自身を含む): 615938040

約数和(自身を除く): 218149562

約数列:

[1, 2, 41, 82, 179, 358, 661, 1322, 1681, 3362, 7339, 14678, 27101, 54202, 118319, 236638, 300899, 601798, 1111141, 2222282, 4851079, 9702158, 198894239, 397788478]

約数ペア:

[(1, 397788478), (2, 198894239), (41, 9702158), (82, 4851079), (179, 2222282), (358, 1111141), (661, 601798), (1322, 300899), (1681, 236638), (3362, 118319), (7339, 54202), (14678, 27101)]