21000261784

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{10771}}^1$

素因数の和:11024

約数の個数: 64

約数和(自身を含む): 42191769600

約数和(自身を除く): 21191507816

約数列:

[1, 2, 4, 8, 19, 38, 76, 101, 127, 152, 202, 254, 404, 508, 808, 1016, 1919, 2413, 3838, 4826, 7676, 9652, 10771, 12827, 15352, 19304, 21542, 25654, 43084, 51308, 86168, 102616, 204649, 243713, 409298, 487426, 818596, 974852, 1087871, 1367917, 1637192, 1949704, 2175742, 2735834, 4351484, 5471668, 8702968, 10943336, 20669549, 25990423, 41339098, 51980846, 82678196, 103961692, 138159617, 165356392, 207923384, 276319234, 552638468, 1105276936, 2625032723, 5250065446, 10500130892, 21000261784]

約数ペア:

[(1, 21000261784), (2, 10500130892), (4, 5250065446), (8, 2625032723), (19, 1105276936), (38, 552638468), (76, 276319234), (101, 207923384), (127, 165356392), (152, 138159617), (202, 103961692), (254, 82678196), (404, 51980846), (508, 41339098), (808, 25990423), (1016, 20669549), (1919, 10943336), (2413, 8702968), (3838, 5471668), (4826, 4351484), (7676, 2735834), (9652, 2175742), (10771, 1949704), (12827, 1637192), (15352, 1367917), (19304, 1087871), (21542, 974852), (25654, 818596), (43084, 487426), (51308, 409298), (86168, 243713), (102616, 204649)]