19788447

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{269}}^1$

素因数の和:423

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11730273

約数列:

[1, 3, 7, 21, 31, 93, 113, 217, 269, 339, 651, 791, 807, 1883, 2373, 3503, 5649, 8339, 10509, 24521, 25017, 30397, 58373, 73563, 91191, 175119, 212779, 638337, 942307, 2826921, 6596149, 19788447]

約数ペア:

[(1, 19788447), (3, 6596149), (7, 2826921), (21, 942307), (31, 638337), (93, 212779), (113, 175119), (217, 91191), (269, 73563), (339, 58373), (651, 30397), (791, 25017), (807, 24521), (1883, 10509), (2373, 8339), (3503, 5649)]