8200820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 18013968

約数和(自身を除く): 9813148

約数列:

[1, 2, 4, 5, 10, 20, 41, 73, 82, 137, 146, 164, 205, 274, 292, 365, 410, 548, 685, 730, 820, 1370, 1460, 2740, 2993, 5617, 5986, 10001, 11234, 11972, 14965, 20002, 22468, 28085, 29930, 40004, 50005, 56170, 59860, 100010, 112340, 200020, 410041, 820082, 1640164, 2050205, 4100410, 8200820]

約数ペア:

[(1, 8200820), (2, 4100410), (4, 2050205), (5, 1640164), (10, 820082), (20, 410041), (41, 200020), (73, 112340), (82, 100010), (137, 59860), (146, 56170), (164, 50005), (205, 40004), (274, 29930), (292, 28085), (365, 22468), (410, 20002), (548, 14965), (685, 11972), (730, 11234), (820, 10001), (1370, 5986), (1460, 5617), (2740, 2993)]