64207720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{691}}^1$

素因数の和:826

約数の個数: 64

約数和(自身を含む): 152461440

約数和(自身を除く): 88253720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 101, 115, 184, 202, 230, 404, 460, 505, 691, 808, 920, 1010, 1382, 2020, 2323, 2764, 3455, 4040, 4646, 5528, 6910, 9292, 11615, 13820, 15893, 18584, 23230, 27640, 31786, 46460, 63572, 69791, 79465, 92920, 127144, 139582, 158930, 279164, 317860, 348955, 558328, 635720, 697910, 1395820, 1605193, 2791640, 3210386, 6420772, 8025965, 12841544, 16051930, 32103860, 64207720]

約数ペア:

[(1, 64207720), (2, 32103860), (4, 16051930), (5, 12841544), (8, 8025965), (10, 6420772), (20, 3210386), (23, 2791640), (40, 1605193), (46, 1395820), (92, 697910), (101, 635720), (115, 558328), (184, 348955), (202, 317860), (230, 279164), (404, 158930), (460, 139582), (505, 127144), (691, 92920), (808, 79465), (920, 69791), (1010, 63572), (1382, 46460), (2020, 31786), (2323, 27640), (2764, 23230), (3455, 18584), (4040, 15893), (4646, 13820), (5528, 11615), (6910, 9292)]