19889090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{152993}}^1$

素因数の和:153013

約数の個数: 16

約数和(自身を含む): 38554488

約数和(自身を除く): 18665398

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 152993, 305986, 764965, 1529930, 1988909, 3977818, 9944545, 19889090]

約数ペア:

[(1, 19889090), (2, 9944545), (5, 3977818), (10, 1988909), (13, 1529930), (26, 764965), (65, 305986), (130, 152993)]