21256071

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{1721}}^1$

素因数の和:1926

約数の個数: 16

約数和(自身を含む): 29756160

約数和(自身を除く): 8500089

約数列:

[1, 3, 23, 69, 179, 537, 1721, 4117, 5163, 12351, 39583, 118749, 308059, 924177, 7085357, 21256071]

約数ペア:

[(1, 21256071), (3, 7085357), (23, 924177), (69, 308059), (179, 118749), (537, 39583), (1721, 12351), (4117, 5163)]