21219550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{941}}^1$

素因数の和:1005

約数の個数: 48

約数和(自身を含む): 44153424

約数和(自身を除く): 22933874

約数列:

[1, 2, 5, 10, 11, 22, 25, 41, 50, 55, 82, 110, 205, 275, 410, 451, 550, 902, 941, 1025, 1882, 2050, 2255, 4510, 4705, 9410, 10351, 11275, 20702, 22550, 23525, 38581, 47050, 51755, 77162, 103510, 192905, 258775, 385810, 424391, 517550, 848782, 964525, 1929050, 2121955, 4243910, 10609775, 21219550]

約数ペア:

[(1, 21219550), (2, 10609775), (5, 4243910), (10, 2121955), (11, 1929050), (22, 964525), (25, 848782), (41, 517550), (50, 424391), (55, 385810), (82, 258775), (110, 192905), (205, 103510), (275, 77162), (410, 51755), (451, 47050), (550, 38581), (902, 23525), (941, 22550), (1025, 20702), (1882, 11275), (2050, 10351), (2255, 9410), (4510, 4705)]