61281520

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10789}}^1$

素因数の和:10873

約数の個数: 40

約数和(自身を含む): 144499680

約数和(自身を除く): 83218160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 10789, 21578, 43156, 53945, 86312, 107890, 172624, 215780, 431560, 766019, 863120, 1532038, 3064076, 3830095, 6128152, 7660190, 12256304, 15320380, 30640760, 61281520]

約数ペア:

[(1, 61281520), (2, 30640760), (4, 15320380), (5, 12256304), (8, 7660190), (10, 6128152), (16, 3830095), (20, 3064076), (40, 1532038), (71, 863120), (80, 766019), (142, 431560), (284, 215780), (355, 172624), (568, 107890), (710, 86312), (1136, 53945), (1420, 43156), (2840, 21578), (5680, 10789)]