20440987

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{463}}^1$

素因数の和:547

約数の個数: 24

約数和(自身を含む): 25707456

約数和(自身を除く): 5266469

約数列:

[1, 7, 17, 49, 53, 119, 371, 463, 833, 901, 2597, 3241, 6307, 7871, 22687, 24539, 44149, 55097, 171773, 385679, 417163, 1202411, 2920141, 20440987]

約数ペア:

[(1, 20440987), (7, 2920141), (17, 1202411), (49, 417163), (53, 385679), (119, 171773), (371, 55097), (463, 44149), (833, 24539), (901, 22687), (2597, 7871), (3241, 6307)]