20977294

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{1171}}^1$

素因数の和:1252

約数の個数: 24

約数和(自身を含む): 34745112

約数和(自身を除く): 13767818

約数列:

[1, 2, 13, 26, 53, 106, 169, 338, 689, 1171, 1378, 2342, 8957, 15223, 17914, 30446, 62063, 124126, 197899, 395798, 806819, 1613638, 10488647, 20977294]

約数ペア:

[(1, 20977294), (2, 10488647), (13, 1613638), (26, 806819), (53, 395798), (106, 197899), (169, 124126), (338, 62063), (689, 30446), (1171, 17914), (1378, 15223), (2342, 8957)]