19865428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{353}}^1\times {\mathrm{1279}}^1$

素因数の和:1647

約数の個数: 24

約数和(自身を含む): 38062080

約数和(自身を除く): 18196652

約数列:

[1, 2, 4, 11, 22, 44, 353, 706, 1279, 1412, 2558, 3883, 5116, 7766, 14069, 15532, 28138, 56276, 451487, 902974, 1805948, 4966357, 9932714, 19865428]

約数ペア:

[(1, 19865428), (2, 9932714), (4, 4966357), (11, 1805948), (22, 902974), (44, 451487), (353, 56276), (706, 28138), (1279, 15532), (1412, 14069), (2558, 7766), (3883, 5116)]