21077157

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{349}}^1\times {\mathrm{491}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 28929600

約数和(自身を除く): 7852443

約数列:

[1, 3, 41, 123, 349, 491, 1047, 1473, 14309, 20131, 42927, 60393, 171359, 514077, 7025719, 21077157]

約数ペア:

[(1, 21077157), (3, 7025719), (41, 514077), (123, 171359), (349, 60393), (491, 42927), (1047, 20131), (1473, 14309)]