20641424

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21149}}^1$

素因数の和:21218

約数の個数: 20

約数和(自身を含む): 40650300

約数和(自身を除く): 20008876

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21149, 42298, 84596, 169192, 338384, 1290089, 2580178, 5160356, 10320712, 20641424]

約数ペア:

[(1, 20641424), (2, 10320712), (4, 5160356), (8, 2580178), (16, 1290089), (61, 338384), (122, 169192), (244, 84596), (488, 42298), (976, 21149)]