202499990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{643}}^1$

素因数の和:1077

約数の個数: 64

約数和(自身を含む): 456261120

約数和(自身を除く): 253761130

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 409, 643, 770, 818, 1286, 2045, 2863, 3215, 4090, 4499, 4501, 5726, 6430, 7073, 8998, 9002, 14146, 14315, 22495, 22505, 28630, 31493, 35365, 44990, 45010, 49511, 62986, 70730, 99022, 157465, 247555, 262987, 314930, 495110, 525974, 1314935, 1840909, 2629870, 2892857, 3681818, 5785714, 9204545, 14464285, 18409090, 20249999, 28928570, 40499998, 101249995, 202499990]

約数ペア:

[(1, 202499990), (2, 101249995), (5, 40499998), (7, 28928570), (10, 20249999), (11, 18409090), (14, 14464285), (22, 9204545), (35, 5785714), (55, 3681818), (70, 2892857), (77, 2629870), (110, 1840909), (154, 1314935), (385, 525974), (409, 495110), (643, 314930), (770, 262987), (818, 247555), (1286, 157465), (2045, 99022), (2863, 70730), (3215, 62986), (4090, 49511), (4499, 45010), (4501, 44990), (5726, 35365), (6430, 31493), (7073, 28630), (8998, 22505), (9002, 22495), (14146, 14315)]