20728491

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1873}}^1$

素因数の和:1931

約数の個数: 32

約数和(自身を含む): 34541568

約数和(自身を除く): 13813077

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 357, 527, 651, 1581, 1873, 3689, 5619, 11067, 13111, 31841, 39333, 58063, 95523, 174189, 222887, 406441, 668661, 987071, 1219323, 2961213, 6909497, 20728491]

約数ペア:

[(1, 20728491), (3, 6909497), (7, 2961213), (17, 1219323), (21, 987071), (31, 668661), (51, 406441), (93, 222887), (119, 174189), (217, 95523), (357, 58063), (527, 39333), (651, 31841), (1581, 13111), (1873, 11067), (3689, 5619)]