80019891

素因数分解:

$3^2\times 7^2\times {\mathrm{421}}^1\times {\mathrm{431}}^1$

素因数の和:872

約数の個数: 36

約数和(自身を含む): 135087264

約数和(自身を除く): 55067373

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 421, 431, 441, 1263, 1293, 2947, 3017, 3789, 3879, 8841, 9051, 20629, 21119, 26523, 27153, 61887, 63357, 181451, 185661, 190071, 544353, 1270157, 1633059, 3810471, 8891099, 11431413, 26673297, 80019891]

約数ペア:

[(1, 80019891), (3, 26673297), (7, 11431413), (9, 8891099), (21, 3810471), (49, 1633059), (63, 1270157), (147, 544353), (421, 190071), (431, 185661), (441, 181451), (1263, 63357), (1293, 61887), (2947, 27153), (3017, 26523), (3789, 21119), (3879, 20629), (8841, 9051)]