21280336

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{751}}^1$

素因数の和:800

約数の個数: 80

約数和(自身を含む): 53710848

約数和(自身を除く): 32430512

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 44, 46, 56, 77, 88, 92, 112, 154, 161, 176, 184, 253, 308, 322, 368, 506, 616, 644, 751, 1012, 1232, 1288, 1502, 1771, 2024, 2576, 3004, 3542, 4048, 5257, 6008, 7084, 8261, 10514, 12016, 14168, 16522, 17273, 21028, 28336, 33044, 34546, 42056, 57827, 66088, 69092, 84112, 115654, 120911, 132176, 138184, 190003, 231308, 241822, 276368, 380006, 462616, 483644, 760012, 925232, 967288, 1330021, 1520024, 1934576, 2660042, 3040048, 5320084, 10640168, 21280336]

約数ペア:

[(1, 21280336), (2, 10640168), (4, 5320084), (7, 3040048), (8, 2660042), (11, 1934576), (14, 1520024), (16, 1330021), (22, 967288), (23, 925232), (28, 760012), (44, 483644), (46, 462616), (56, 380006), (77, 276368), (88, 241822), (92, 231308), (112, 190003), (154, 138184), (161, 132176), (176, 120911), (184, 115654), (253, 84112), (308, 69092), (322, 66088), (368, 57827), (506, 42056), (616, 34546), (644, 33044), (751, 28336), (1012, 21028), (1232, 17273), (1288, 16522), (1502, 14168), (1771, 12016), (2024, 10514), (2576, 8261), (3004, 7084), (3542, 6008), (4048, 5257)]