20644558

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 35038080

約数和(自身を除く): 14393522

約数列:

[1, 2, 11, 22, 43, 86, 139, 157, 278, 314, 473, 946, 1529, 1727, 3058, 3454, 5977, 6751, 11954, 13502, 21823, 43646, 65747, 74261, 131494, 148522, 240053, 480106, 938389, 1876778, 10322279, 20644558]

約数ペア:

[(1, 20644558), (2, 10322279), (11, 1876778), (22, 938389), (43, 480106), (86, 240053), (139, 148522), (157, 131494), (278, 74261), (314, 65747), (473, 43646), (946, 21823), (1529, 13502), (1727, 11954), (3058, 6751), (3454, 5977)]