20853400

素因数分解:

$2^3\times 5^2\times {\mathrm{127}}^1\times {\mathrm{821}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 48925440

約数和(自身を除く): 28072040

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 127, 200, 254, 508, 635, 821, 1016, 1270, 1642, 2540, 3175, 3284, 4105, 5080, 6350, 6568, 8210, 12700, 16420, 20525, 25400, 32840, 41050, 82100, 104267, 164200, 208534, 417068, 521335, 834136, 1042670, 2085340, 2606675, 4170680, 5213350, 10426700, 20853400]

約数ペア:

[(1, 20853400), (2, 10426700), (4, 5213350), (5, 4170680), (8, 2606675), (10, 2085340), (20, 1042670), (25, 834136), (40, 521335), (50, 417068), (100, 208534), (127, 164200), (200, 104267), (254, 82100), (508, 41050), (635, 32840), (821, 25400), (1016, 20525), (1270, 16420), (1642, 12700), (2540, 8210), (3175, 6568), (3284, 6350), (4105, 5080)]