21256953

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{21937}}^1$

素因数の和:21976

約数の個数: 16

約数和(自身を含む): 31590720

約数和(自身を除く): 10333767

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 21937, 65811, 372929, 416803, 1118787, 1250409, 7085651, 21256953]

約数ペア:

[(1, 21256953), (3, 7085651), (17, 1250409), (19, 1118787), (51, 416803), (57, 372929), (323, 65811), (969, 21937)]