21281514

素因数分解:

$2^1\times 3^1\times {\mathrm{53}}^1\times {\mathrm{66923}}^1$

素因数の和:66981

約数の個数: 16

約数和(自身を含む): 43366752

約数和(自身を除く): 22085238

約数列:

[1, 2, 3, 6, 53, 106, 159, 318, 66923, 133846, 200769, 401538, 3546919, 7093838, 10640757, 21281514]

約数ペア:

[(1, 21281514), (2, 10640757), (3, 7093838), (6, 3546919), (53, 401538), (106, 200769), (159, 133846), (318, 66923)]