20520776

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{233}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 39382200

約数和(自身を除く): 18861424

約数列:

[1, 2, 4, 8, 101, 109, 202, 218, 233, 404, 436, 466, 808, 872, 932, 1864, 11009, 22018, 23533, 25397, 44036, 47066, 50794, 88072, 94132, 101588, 188264, 203176, 2565097, 5130194, 10260388, 20520776]

約数ペア:

[(1, 20520776), (2, 10260388), (4, 5130194), (8, 2565097), (101, 203176), (109, 188264), (202, 101588), (218, 94132), (233, 88072), (404, 50794), (436, 47066), (466, 44036), (808, 25397), (872, 23533), (932, 22018), (1864, 11009)]