20290865

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19991}}^1$

素因数の和:20032

約数の個数: 16

約数和(自身を含む): 28788480

約数和(自身を除く): 8497615

約数列:

[1, 5, 7, 29, 35, 145, 203, 1015, 19991, 99955, 139937, 579739, 699685, 2898695, 4058173, 20290865]

約数ペア:

[(1, 20290865), (5, 4058173), (7, 2898695), (29, 699685), (35, 579739), (145, 139937), (203, 99955), (1015, 19991)]