21454928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{877}}^1$

素因数の和:1035

約数の個数: 40

約数和(自身を含む): 45726240

約数和(自身を除く): 24271312

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 139, 176, 278, 556, 877, 1112, 1529, 1754, 2224, 3058, 3508, 6116, 7016, 9647, 12232, 14032, 19294, 24464, 38588, 77176, 121903, 154352, 243806, 487612, 975224, 1340933, 1950448, 2681866, 5363732, 10727464, 21454928]

約数ペア:

[(1, 21454928), (2, 10727464), (4, 5363732), (8, 2681866), (11, 1950448), (16, 1340933), (22, 975224), (44, 487612), (88, 243806), (139, 154352), (176, 121903), (278, 77176), (556, 38588), (877, 24464), (1112, 19294), (1529, 14032), (1754, 12232), (2224, 9647), (3058, 7016), (3508, 6116)]