218394640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{44753}}^1$

素因数の和:44827

約数の個数: 40

約数和(自身を含む): 516103128

約数和(自身を除く): 297708488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 44753, 89506, 179012, 223765, 358024, 447530, 716048, 895060, 1790120, 2729933, 3580240, 5459866, 10919732, 13649665, 21839464, 27299330, 43678928, 54598660, 109197320, 218394640]

約数ペア:

[(1, 218394640), (2, 109197320), (4, 54598660), (5, 43678928), (8, 27299330), (10, 21839464), (16, 13649665), (20, 10919732), (40, 5459866), (61, 3580240), (80, 2729933), (122, 1790120), (244, 895060), (305, 716048), (488, 447530), (610, 358024), (976, 223765), (1220, 179012), (2440, 89506), (4880, 44753)]