21490810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17761}}^1$

素因数の和:17790

約数の個数: 24

約数和(自身を含む): 42522228

約数和(自身を除く): 21031418

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 17761, 35522, 88805, 177610, 195371, 390742, 976855, 1953710, 2149081, 4298162, 10745405, 21490810]

約数ペア:

[(1, 21490810), (2, 10745405), (5, 4298162), (10, 2149081), (11, 1953710), (22, 976855), (55, 390742), (110, 195371), (121, 177610), (242, 88805), (605, 35522), (1210, 17761)]