231440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{263}}^1$

素因数の和:287

約数の個数: 40

約数和(自身を含む): 589248

約数和(自身を除く): 357808

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 263, 440, 526, 880, 1052, 1315, 2104, 2630, 2893, 4208, 5260, 5786, 10520, 11572, 14465, 21040, 23144, 28930, 46288, 57860, 115720, 231440]

約数ペア:

[(1, 231440), (2, 115720), (4, 57860), (5, 46288), (8, 28930), (10, 23144), (11, 21040), (16, 14465), (20, 11572), (22, 10520), (40, 5786), (44, 5260), (55, 4208), (80, 2893), (88, 2630), (110, 2104), (176, 1315), (220, 1052), (263, 880), (440, 526)]