81785144

素因数分解:

$2^3\times 7^1\times {\mathrm{421}}^1\times {\mathrm{3469}}^1$

素因数の和:3903

約数の個数: 32

約数和(自身を含む): 175720800

約数和(自身を除く): 93935656

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 421, 842, 1684, 2947, 3368, 3469, 5894, 6938, 11788, 13876, 23576, 24283, 27752, 48566, 97132, 194264, 1460449, 2920898, 5841796, 10223143, 11683592, 20446286, 40892572, 81785144]

約数ペア:

[(1, 81785144), (2, 40892572), (4, 20446286), (7, 11683592), (8, 10223143), (14, 5841796), (28, 2920898), (56, 1460449), (421, 194264), (842, 97132), (1684, 48566), (2947, 27752), (3368, 24283), (3469, 23576), (5894, 13876), (6938, 11788)]