19702138

素因数分解:

$2^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{541}}^1$

素因数の和:813

約数の個数: 16

約数和(自身を含む): 30048480

約数和(自身を除く): 10346342

約数列:

[1, 2, 131, 139, 262, 278, 541, 1082, 18209, 36418, 70871, 75199, 141742, 150398, 9851069, 19702138]

約数ペア:

[(1, 19702138), (2, 9851069), (131, 150398), (139, 141742), (262, 75199), (278, 70871), (541, 36418), (1082, 18209)]