21696423

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54377}}^1$

素因数の和:54406

約数の個数: 16

約数和(自身を含む): 34801920

約数和(自身を除く): 13105497

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54377, 163131, 380639, 1033163, 1141917, 3099489, 7232141, 21696423]

約数ペア:

[(1, 21696423), (3, 7232141), (7, 3099489), (19, 1141917), (21, 1033163), (57, 380639), (133, 163131), (399, 54377)]