21219485

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1877}}^1$

素因数の和:1925

約数の個数: 32

約数和(自身を含む): 32451840

約数和(自身を除く): 11232355

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 119, 133, 323, 595, 665, 1615, 1877, 2261, 9385, 11305, 13139, 31909, 35663, 65695, 159545, 178315, 223363, 249641, 606271, 1116815, 1248205, 3031355, 4243897, 21219485]

約数ペア:

[(1, 21219485), (5, 4243897), (7, 3031355), (17, 1248205), (19, 1116815), (35, 606271), (85, 249641), (95, 223363), (119, 178315), (133, 159545), (323, 65695), (595, 35663), (665, 31909), (1615, 13139), (1877, 11305), (2261, 9385)]