688516281

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{631}}^1\times {\mathrm{709}}^1$

素因数の和:1371

約数の個数: 40

約数和(自身を含む): 1085902400

約数和(自身を除く): 397386119

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 631, 709, 1539, 1893, 2127, 5679, 6381, 11989, 13471, 17037, 19143, 35967, 40413, 51111, 57429, 107901, 121239, 323703, 363717, 447379, 971109, 1091151, 1342137, 4026411, 8500201, 12079233, 25500603, 36237699, 76501809, 229505427, 688516281]

約数ペア:

[(1, 688516281), (3, 229505427), (9, 76501809), (19, 36237699), (27, 25500603), (57, 12079233), (81, 8500201), (171, 4026411), (513, 1342137), (631, 1091151), (709, 971109), (1539, 447379), (1893, 363717), (2127, 323703), (5679, 121239), (6381, 107901), (11989, 57429), (13471, 51111), (17037, 40413), (19143, 35967)]