19718447

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{4007}}^1$

素因数の和:4070

約数の個数: 16

約数和(自身を含む): 24368640

約数和(自身を除く): 4650193

約数列:

[1, 7, 19, 37, 133, 259, 703, 4007, 4921, 28049, 76133, 148259, 532931, 1037813, 2816921, 19718447]

約数ペア:

[(1, 19718447), (7, 2816921), (19, 1037813), (37, 532931), (133, 148259), (259, 76133), (703, 28049), (4007, 4921)]