21049457

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^4\times {\mathrm{67}}^1$

素因数の和:130

約数の個数: 20

約数和(自身を含む): 25247856

約数和(自身を除く): 4198399

約数列:

[1, 11, 13, 67, 143, 169, 737, 871, 1859, 2197, 9581, 11323, 24167, 28561, 124553, 147199, 314171, 1619189, 1913587, 21049457]

約数ペア:

[(1, 21049457), (11, 1913587), (13, 1619189), (67, 314171), (143, 147199), (169, 124553), (737, 28561), (871, 24167), (1859, 11323), (2197, 9581)]