78516921

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{107}}^1\times {\mathrm{421}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 122508288

約数和(自身を除く): 43991367

約数列:

[1, 3, 7, 21, 83, 107, 249, 321, 421, 581, 749, 1263, 1743, 2247, 2947, 8841, 8881, 26643, 34943, 45047, 62167, 104829, 135141, 186501, 244601, 315329, 733803, 945987, 3738901, 11216703, 26172307, 78516921]

約数ペア:

[(1, 78516921), (3, 26172307), (7, 11216703), (21, 3738901), (83, 945987), (107, 733803), (249, 315329), (321, 244601), (421, 186501), (581, 135141), (749, 104829), (1263, 62167), (1743, 45047), (2247, 34943), (2947, 26643), (8841, 8881)]