19881238

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1\times {\mathrm{1171}}^1$

素因数の和:1839

約数の個数: 16

約数和(自身を含む): 32192496

約数和(自身を除く): 12311258

約数列:

[1, 2, 13, 26, 653, 1171, 1306, 2342, 8489, 15223, 16978, 30446, 764663, 1529326, 9940619, 19881238]

約数ペア:

[(1, 19881238), (2, 9940619), (13, 1529326), (26, 764663), (653, 30446), (1171, 16978), (1306, 15223), (2342, 8489)]