81119720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1\times {\mathrm{701}}^1$

素因数の和:986

約数の個数: 64

約数和(自身を含む): 200154240

約数和(自身を除く): 119034520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 263, 440, 526, 701, 1052, 1315, 1402, 2104, 2630, 2804, 2893, 3505, 5260, 5608, 5786, 7010, 7711, 10520, 11572, 14020, 14465, 15422, 23144, 28040, 28930, 30844, 38555, 57860, 61688, 77110, 115720, 154220, 184363, 308440, 368726, 737452, 921815, 1474904, 1843630, 2027993, 3687260, 4055986, 7374520, 8111972, 10139965, 16223944, 20279930, 40559860, 81119720]

約数ペア:

[(1, 81119720), (2, 40559860), (4, 20279930), (5, 16223944), (8, 10139965), (10, 8111972), (11, 7374520), (20, 4055986), (22, 3687260), (40, 2027993), (44, 1843630), (55, 1474904), (88, 921815), (110, 737452), (220, 368726), (263, 308440), (440, 184363), (526, 154220), (701, 115720), (1052, 77110), (1315, 61688), (1402, 57860), (2104, 38555), (2630, 30844), (2804, 28930), (2893, 28040), (3505, 23144), (5260, 15422), (5608, 14465), (5786, 14020), (7010, 11572), (7711, 10520)]