20792780

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 24446260

約数列:

[1, 2, 4, 5, 10, 20, 59, 67, 118, 134, 236, 263, 268, 295, 335, 526, 590, 670, 1052, 1180, 1315, 1340, 2630, 3953, 5260, 7906, 15517, 15812, 17621, 19765, 31034, 35242, 39530, 62068, 70484, 77585, 79060, 88105, 155170, 176210, 310340, 352420, 1039639, 2079278, 4158556, 5198195, 10396390, 20792780]

約数ペア:

[(1, 20792780), (2, 10396390), (4, 5198195), (5, 4158556), (10, 2079278), (20, 1039639), (59, 352420), (67, 310340), (118, 176210), (134, 155170), (236, 88105), (263, 79060), (268, 77585), (295, 70484), (335, 62068), (526, 39530), (590, 35242), (670, 31034), (1052, 19765), (1180, 17621), (1315, 15812), (1340, 15517), (2630, 7906), (3953, 5260)]