80827020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1789}}^1$

素因数の和:2055

約数の個数: 72

約数和(自身を含む): 246289680

約数和(自身を除く): 165462660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 251, 502, 753, 1004, 1255, 1506, 1789, 2259, 2510, 3012, 3578, 3765, 4518, 5020, 5367, 7156, 7530, 8945, 9036, 10734, 11295, 15060, 16101, 17890, 21468, 22590, 26835, 32202, 35780, 45180, 53670, 64404, 80505, 107340, 161010, 322020, 449039, 898078, 1347117, 1796156, 2245195, 2694234, 4041351, 4490390, 5388468, 6735585, 8082702, 8980780, 13471170, 16165404, 20206755, 26942340, 40413510, 80827020]

約数ペア:

[(1, 80827020), (2, 40413510), (3, 26942340), (4, 20206755), (5, 16165404), (6, 13471170), (9, 8980780), (10, 8082702), (12, 6735585), (15, 5388468), (18, 4490390), (20, 4041351), (30, 2694234), (36, 2245195), (45, 1796156), (60, 1347117), (90, 898078), (180, 449039), (251, 322020), (502, 161010), (753, 107340), (1004, 80505), (1255, 64404), (1506, 53670), (1789, 45180), (2259, 35780), (2510, 32202), (3012, 26835), (3578, 22590), (3765, 21468), (4518, 17890), (5020, 16101), (5367, 15060), (7156, 11295), (7530, 10734), (8945, 9036)]