205418305

素因数分解:

$5^1\times {\mathrm{163}}^1\times {\mathrm{307}}^1\times {\mathrm{821}}^1$

素因数の和:1296

約数の個数: 16

約数和(自身を含む): 249125184

約数和(自身を除く): 43706879

約数列:

[1, 5, 163, 307, 815, 821, 1535, 4105, 50041, 133823, 250205, 252047, 669115, 1260235, 41083661, 205418305]

約数ペア:

[(1, 205418305), (5, 41083661), (163, 1260235), (307, 669115), (815, 252047), (821, 250205), (1535, 133823), (4105, 50041)]