51405921

素因数分解:

$3^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 90015744

約数和(自身を除く): 38609823

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 81, 141, 189, 243, 329, 423, 567, 643, 987, 1269, 1701, 1929, 2961, 3807, 4501, 5787, 8883, 11421, 13503, 17361, 26649, 30221, 40509, 52083, 79947, 90663, 121527, 156249, 211547, 271989, 364581, 634641, 815967, 1093743, 1903923, 2447901, 5711769, 7343703, 17135307, 51405921]

約数ペア:

[(1, 51405921), (3, 17135307), (7, 7343703), (9, 5711769), (21, 2447901), (27, 1903923), (47, 1093743), (63, 815967), (81, 634641), (141, 364581), (189, 271989), (243, 211547), (329, 156249), (423, 121527), (567, 90663), (643, 79947), (987, 52083), (1269, 40509), (1701, 30221), (1929, 26649), (2961, 17361), (3807, 13503), (4501, 11421), (5787, 8883)]