20554390

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1\times {\mathrm{431}}^1$

素因数の和:708

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 18636650

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 251, 431, 502, 862, 1255, 2155, 2510, 4310, 4769, 8189, 9538, 16378, 23845, 40945, 47690, 81890, 108181, 216362, 540905, 1081810, 2055439, 4110878, 10277195, 20554390]

約数ペア:

[(1, 20554390), (2, 10277195), (5, 4110878), (10, 2055439), (19, 1081810), (38, 540905), (95, 216362), (190, 108181), (251, 81890), (431, 47690), (502, 40945), (862, 23845), (1255, 16378), (2155, 9538), (2510, 8189), (4310, 4769)]