19712823

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{719}}^1$

素因数の和:791

約数の個数: 32

約数和(自身を含む): 30643200

約数和(自身を除く): 10930377

約数列:

[1, 3, 13, 19, 37, 39, 57, 111, 247, 481, 703, 719, 741, 1443, 2109, 2157, 9139, 9347, 13661, 26603, 27417, 28041, 40983, 79809, 177593, 345839, 505457, 532779, 1037517, 1516371, 6570941, 19712823]

約数ペア:

[(1, 19712823), (3, 6570941), (13, 1516371), (19, 1037517), (37, 532779), (39, 505457), (57, 345839), (111, 177593), (247, 79809), (481, 40983), (703, 28041), (719, 27417), (741, 26603), (1443, 13661), (2109, 9347), (2157, 9139)]