16890190

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{23789}}^1$

素因数の和:23867

約数の個数: 16

約数和(自身を含む): 30831840

約数和(自身を除く): 13941650

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 23789, 47578, 118945, 237890, 1689019, 3378038, 8445095, 16890190]

約数ペア:

[(1, 16890190), (2, 8445095), (5, 3378038), (10, 1689019), (71, 237890), (142, 118945), (355, 47578), (710, 23789)]