256921599

素因数分解:

$3^1\times {\mathrm{11}}^3\times {\mathrm{37}}^2\times {\mathrm{47}}^1$

素因数の和:157

約数の個数: 48

約数和(自身を含む): 395490816

約数和(自身を除く): 138569217

約数列:

[1, 3, 11, 33, 37, 47, 111, 121, 141, 363, 407, 517, 1221, 1331, 1369, 1551, 1739, 3993, 4107, 4477, 5217, 5687, 13431, 15059, 17061, 19129, 45177, 49247, 57387, 62557, 64343, 147741, 165649, 187671, 193029, 210419, 496947, 631257, 707773, 1822139, 2123319, 2314609, 5466417, 6943827, 7785503, 23356509, 85640533, 256921599]

約数ペア:

[(1, 256921599), (3, 85640533), (11, 23356509), (33, 7785503), (37, 6943827), (47, 5466417), (111, 2314609), (121, 2123319), (141, 1822139), (363, 707773), (407, 631257), (517, 496947), (1221, 210419), (1331, 193029), (1369, 187671), (1551, 165649), (1739, 147741), (3993, 64343), (4107, 62557), (4477, 57387), (5217, 49247), (5687, 45177), (13431, 19129), (15059, 17061)]