81194540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{579961}}^1$

素因数の和:579977

約数の個数: 24

約数和(自身を含む): 194867232

約数和(自身を除く): 113672692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 579961, 1159922, 2319844, 2899805, 4059727, 5799610, 8119454, 11599220, 16238908, 20298635, 40597270, 81194540]

約数ペア:

[(1, 81194540), (2, 40597270), (4, 20298635), (5, 16238908), (7, 11599220), (10, 8119454), (14, 5799610), (20, 4059727), (28, 2899805), (35, 2319844), (70, 1159922), (140, 579961)]