78182020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{911}}^1$

素因数の和:1540

約数の個数: 48

約数和(自身を含む): 188149248

約数和(自身を除く): 109967228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 613, 911, 1226, 1822, 2452, 3065, 3644, 4291, 4555, 6130, 6377, 8582, 9110, 12260, 12754, 17164, 18220, 21455, 25508, 31885, 42910, 63770, 85820, 127540, 558443, 1116886, 2233772, 2792215, 3909101, 5584430, 7818202, 11168860, 15636404, 19545505, 39091010, 78182020]

約数ペア:

[(1, 78182020), (2, 39091010), (4, 19545505), (5, 15636404), (7, 11168860), (10, 7818202), (14, 5584430), (20, 3909101), (28, 2792215), (35, 2233772), (70, 1116886), (140, 558443), (613, 127540), (911, 85820), (1226, 63770), (1822, 42910), (2452, 31885), (3065, 25508), (3644, 21455), (4291, 18220), (4555, 17164), (6130, 12754), (6377, 12260), (8582, 9110)]