18272245

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 22498560

約数和(自身を除く): 4226315

約数列:

[1, 5, 61, 139, 305, 431, 695, 2155, 8479, 26291, 42395, 59909, 131455, 299545, 3654449, 18272245]

約数ペア:

[(1, 18272245), (5, 3654449), (61, 299545), (139, 131455), (305, 59909), (431, 42395), (695, 26291), (2155, 8479)]