81470263

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 100782080

約数和(自身を除く): 19311817

約数列:

[1, 7, 31, 37, 73, 139, 217, 259, 511, 973, 1147, 2263, 2701, 4309, 5143, 8029, 10147, 15841, 18907, 30163, 36001, 71029, 83731, 159433, 314557, 375439, 586117, 1116031, 2201899, 2628073, 11638609, 81470263]

約数ペア:

[(1, 81470263), (7, 11638609), (31, 2628073), (37, 2201899), (73, 1116031), (139, 586117), (217, 375439), (259, 314557), (511, 159433), (973, 83731), (1147, 71029), (2263, 36001), (2701, 30163), (4309, 18907), (5143, 15841), (8029, 10147)]