21001526

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{449}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 18008074

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 257, 449, 514, 898, 1799, 3143, 3341, 3598, 5837, 6286, 6682, 11674, 23387, 40859, 46774, 81718, 115393, 230786, 807751, 1500109, 1615502, 3000218, 10500763, 21001526]

約数ペア:

[(1, 21001526), (2, 10500763), (7, 3000218), (13, 1615502), (14, 1500109), (26, 807751), (91, 230786), (182, 115393), (257, 81718), (449, 46774), (514, 40859), (898, 23387), (1799, 11674), (3143, 6682), (3341, 6286), (3598, 5837)]