21305431

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{653}}^1$

素因数の和:798

約数の個数: 16

約数和(自身を含む): 25113600

約数和(自身を除く): 3808169

約数列:

[1, 7, 59, 79, 413, 553, 653, 4571, 4661, 32627, 38527, 51587, 269689, 361109, 3043633, 21305431]

約数ペア:

[(1, 21305431), (7, 3043633), (59, 361109), (79, 269689), (413, 51587), (553, 38527), (653, 32627), (4571, 4661)]