19979466

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{256147}}^1$

素因数の和:256165

約数の個数: 16

約数和(自身を含む): 43032864

約数和(自身を除く): 23053398

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 256147, 512294, 768441, 1536882, 3329911, 6659822, 9989733, 19979466]

約数ペア:

[(1, 19979466), (2, 9989733), (3, 6659822), (6, 3329911), (13, 1536882), (26, 768441), (39, 512294), (78, 256147)]