78561520

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{14657}}^1$

素因数の和:14737

約数の個数: 40

約数和(自身を含む): 185394384

約数和(自身を除く): 106832864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 14657, 29314, 58628, 73285, 117256, 146570, 234512, 293140, 586280, 982019, 1172560, 1964038, 3928076, 4910095, 7856152, 9820190, 15712304, 19640380, 39280760, 78561520]

約数ペア:

[(1, 78561520), (2, 39280760), (4, 19640380), (5, 15712304), (8, 9820190), (10, 7856152), (16, 4910095), (20, 3928076), (40, 1964038), (67, 1172560), (80, 982019), (134, 586280), (268, 293140), (335, 234512), (536, 146570), (670, 117256), (1072, 73285), (1340, 58628), (2680, 29314), (5360, 14657)]