21478939

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{769}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 23950080

約数和(自身を除く): 2471141

約数列:

[1, 17, 31, 53, 527, 769, 901, 1643, 13073, 23839, 27931, 40757, 405263, 692869, 1263467, 21478939]

約数ペア:

[(1, 21478939), (17, 1263467), (31, 692869), (53, 405263), (527, 40757), (769, 27931), (901, 23839), (1643, 13073)]