20505904

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{31259}}^1$

素因数の和:31308

約数の個数: 20

約数和(自身を含む): 40700520

約数和(自身を除く): 20194616

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 31259, 62518, 125036, 250072, 500144, 1281619, 2563238, 5126476, 10252952, 20505904]

約数ペア:

[(1, 20505904), (2, 10252952), (4, 5126476), (8, 2563238), (16, 1281619), (41, 500144), (82, 250072), (164, 125036), (328, 62518), (656, 31259)]