21042537

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{1487}}^1$

素因数の和:1632

約数の個数: 16

約数和(自身を含む): 28926720

約数和(自身を除く): 7884183

約数列:

[1, 3, 53, 89, 159, 267, 1487, 4461, 4717, 14151, 78811, 132343, 236433, 397029, 7014179, 21042537]

約数ペア:

[(1, 21042537), (3, 7014179), (53, 397029), (89, 236433), (159, 132343), (267, 78811), (1487, 14151), (4461, 4717)]