21195655480

素因数分解:

$2^3\times 5^1\times {\mathrm{2087}}^1\times {\mathrm{253901}}^1$

素因数の和:255999

約数の個数: 32

約数和(自身を含む): 47713263840

約数和(自身を除く): 26517608360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2087, 4174, 8348, 10435, 16696, 20870, 41740, 83480, 253901, 507802, 1015604, 1269505, 2031208, 2539010, 5078020, 10156040, 529891387, 1059782774, 2119565548, 2649456935, 4239131096, 5298913870, 10597827740, 21195655480]

約数ペア:

[(1, 21195655480), (2, 10597827740), (4, 5298913870), (5, 4239131096), (8, 2649456935), (10, 2119565548), (20, 1059782774), (40, 529891387), (2087, 10156040), (4174, 5078020), (8348, 2539010), (10435, 2031208), (16696, 1269505), (20870, 1015604), (41740, 507802), (83480, 253901)]