20388668

素因数分解:

$2^2\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{463}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 36442560

約数和(自身を除く): 16053892

約数列:

[1, 2, 4, 101, 109, 202, 218, 404, 436, 463, 926, 1852, 11009, 22018, 44036, 46763, 50467, 93526, 100934, 187052, 201868, 5097167, 10194334, 20388668]

約数ペア:

[(1, 20388668), (2, 10194334), (4, 5097167), (101, 201868), (109, 187052), (202, 100934), (218, 93526), (404, 50467), (436, 46763), (463, 44036), (926, 22018), (1852, 11009)]