256012407

素因数分解:

$3^7\times 7^2\times {\mathrm{2389}}^1$

素因数の和:2424

約数の個数: 48

約数和(自身を含む): 446834400

約数和(自身を除く): 190821993

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 441, 567, 729, 1323, 1701, 2187, 2389, 3969, 5103, 7167, 11907, 15309, 16723, 21501, 35721, 50169, 64503, 107163, 117061, 150507, 193509, 351183, 451521, 580527, 1053549, 1354563, 1741581, 3160647, 4063689, 5224743, 9481941, 12191067, 28445823, 36573201, 85337469, 256012407]

約数ペア:

[(1, 256012407), (3, 85337469), (7, 36573201), (9, 28445823), (21, 12191067), (27, 9481941), (49, 5224743), (63, 4063689), (81, 3160647), (147, 1741581), (189, 1354563), (243, 1053549), (441, 580527), (567, 451521), (729, 351183), (1323, 193509), (1701, 150507), (2187, 117061), (2389, 107163), (3969, 64503), (5103, 50169), (7167, 35721), (11907, 21501), (15309, 16723)]