20011453

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:433

約数の個数: 24

約数和(自身を含む): 25674624

約数和(自身を除く): 5663171

約数列:

[1, 7, 11, 49, 77, 137, 271, 539, 959, 1507, 1897, 2981, 6713, 10549, 13279, 20867, 37127, 73843, 146069, 259889, 408397, 1819223, 2858779, 20011453]

約数ペア:

[(1, 20011453), (7, 2858779), (11, 1819223), (49, 408397), (77, 259889), (137, 146069), (271, 73843), (539, 37127), (959, 20867), (1507, 13279), (1897, 10549), (2981, 6713)]