20762320

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2381}}^1$

素因数の和:2503

約数の個数: 40

約数和(自身を含む): 48735720

約数和(自身を除く): 27973400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 2381, 4360, 4762, 8720, 9524, 11905, 19048, 23810, 38096, 47620, 95240, 190480, 259529, 519058, 1038116, 1297645, 2076232, 2595290, 4152464, 5190580, 10381160, 20762320]

約数ペア:

[(1, 20762320), (2, 10381160), (4, 5190580), (5, 4152464), (8, 2595290), (10, 2076232), (16, 1297645), (20, 1038116), (40, 519058), (80, 259529), (109, 190480), (218, 95240), (436, 47620), (545, 38096), (872, 23810), (1090, 19048), (1744, 11905), (2180, 9524), (2381, 8720), (4360, 4762)]