16551440

素因数分解:

$2^4\times 5^1\times {\mathrm{313}}^1\times {\mathrm{661}}^1$

素因数の和:987

約数の個数: 40

約数和(自身を含む): 38663448

約数和(自身を除く): 22112008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 313, 626, 661, 1252, 1322, 1565, 2504, 2644, 3130, 3305, 5008, 5288, 6260, 6610, 10576, 12520, 13220, 25040, 26440, 52880, 206893, 413786, 827572, 1034465, 1655144, 2068930, 3310288, 4137860, 8275720, 16551440]

約数ペア:

[(1, 16551440), (2, 8275720), (4, 4137860), (5, 3310288), (8, 2068930), (10, 1655144), (16, 1034465), (20, 827572), (40, 413786), (80, 206893), (313, 52880), (626, 26440), (661, 25040), (1252, 13220), (1322, 12520), (1565, 10576), (2504, 6610), (2644, 6260), (3130, 5288), (3305, 5008)]