67720989

素因数分解:

$3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{12451}}^1$

素因数の和:12505

約数の個数: 24

約数和(自身を含む): 107884128

約数和(自身を除く): 40163139

約数列:

[1, 3, 7, 21, 37, 49, 111, 147, 259, 777, 1813, 5439, 12451, 37353, 87157, 261471, 460687, 610099, 1382061, 1830297, 3224809, 9674427, 22573663, 67720989]

約数ペア:

[(1, 67720989), (3, 22573663), (7, 9674427), (21, 3224809), (37, 1830297), (49, 1382061), (111, 610099), (147, 460687), (259, 261471), (777, 87157), (1813, 37353), (5439, 12451)]