80439520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{71821}}^1$

素因数の和:71843

約数の個数: 48

約数和(自身を含む): 217189728

約数和(自身を除く): 136750208

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 71821, 143642, 287284, 359105, 502747, 574568, 718210, 1005494, 1149136, 1436420, 2010988, 2298272, 2513735, 2872840, 4021976, 5027470, 5745680, 8043952, 10054940, 11491360, 16087904, 20109880, 40219760, 80439520]

約数ペア:

[(1, 80439520), (2, 40219760), (4, 20109880), (5, 16087904), (7, 11491360), (8, 10054940), (10, 8043952), (14, 5745680), (16, 5027470), (20, 4021976), (28, 2872840), (32, 2513735), (35, 2298272), (40, 2010988), (56, 1436420), (70, 1149136), (80, 1005494), (112, 718210), (140, 574568), (160, 502747), (224, 359105), (280, 287284), (560, 143642), (1120, 71821)]