18287841

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:981

約数の個数: 32

約数和(自身を含む): 29288448

約数和(自身を除く): 11000607

約数列:

[1, 3, 11, 13, 33, 39, 47, 141, 143, 429, 517, 611, 907, 1551, 1833, 2721, 6721, 9977, 11791, 20163, 29931, 35373, 42629, 127887, 129701, 389103, 468919, 554177, 1406757, 1662531, 6095947, 18287841]

約数ペア:

[(1, 18287841), (3, 6095947), (11, 1662531), (13, 1406757), (33, 554177), (39, 468919), (47, 389103), (141, 129701), (143, 127887), (429, 42629), (517, 35373), (611, 29931), (907, 20163), (1551, 11791), (1833, 9977), (2721, 6721)]