19987597

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1663}}^1$

素因数の和:1788

約数の個数: 16

約数和(自身を含む): 24440832

約数和(自身を除く): 4453235

約数列:

[1, 7, 17, 101, 119, 707, 1663, 1717, 11641, 12019, 28271, 167963, 197897, 1175741, 2855371, 19987597]

約数ペア:

[(1, 19987597), (7, 2855371), (17, 1175741), (101, 197897), (119, 167963), (707, 28271), (1663, 12019), (1717, 11641)]