205717640

素因数分解:

$2^3\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{3947}}^1$

素因数の和:5261

約数の個数: 32

約数和(自身を含む): 463337280

約数和(自身を除く): 257619640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1303, 2606, 3947, 5212, 6515, 7894, 10424, 13030, 15788, 19735, 26060, 31576, 39470, 52120, 78940, 157880, 5142941, 10285882, 20571764, 25714705, 41143528, 51429410, 102858820, 205717640]

約数ペア:

[(1, 205717640), (2, 102858820), (4, 51429410), (5, 41143528), (8, 25714705), (10, 20571764), (20, 10285882), (40, 5142941), (1303, 157880), (2606, 78940), (3947, 52120), (5212, 39470), (6515, 31576), (7894, 26060), (10424, 19735), (13030, 15788)]