21372197

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{5237}}^1$

素因数の和:5308

約数の個数: 16

約数和(自身を含む): 27153792

約数和(自身を除く): 5781595

約数列:

[1, 7, 11, 53, 77, 371, 583, 4081, 5237, 36659, 57607, 277561, 403249, 1942927, 3053171, 21372197]

約数ペア:

[(1, 21372197), (7, 3053171), (11, 1942927), (53, 403249), (77, 277561), (371, 57607), (583, 36659), (4081, 5237)]