64471900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{8161}}^1$

素因数の和:8254

約数の個数: 36

約数和(自身を含む): 141692320

約数和(自身を除く): 77220420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 8161, 16322, 32644, 40805, 81610, 163220, 204025, 408050, 644719, 816100, 1289438, 2578876, 3223595, 6447190, 12894380, 16117975, 32235950, 64471900]

約数ペア:

[(1, 64471900), (2, 32235950), (4, 16117975), (5, 12894380), (10, 6447190), (20, 3223595), (25, 2578876), (50, 1289438), (79, 816100), (100, 644719), (158, 408050), (316, 204025), (395, 163220), (790, 81610), (1580, 40805), (1975, 32644), (3950, 16322), (7900, 8161)]