21010900225

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3872977}}^1$

素因数の和:3873025

約数の個数: 24

約数和(自身を含む): 30735953408

約数和(自身を除く): 9725053183

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 5425, 3872977, 19364885, 27110839, 96824425, 120062287, 135554195, 600311435, 677770975, 840436009, 3001557175, 4202180045, 21010900225]

約数ペア:

[(1, 21010900225), (5, 4202180045), (7, 3001557175), (25, 840436009), (31, 677770975), (35, 600311435), (155, 135554195), (175, 120062287), (217, 96824425), (775, 27110839), (1085, 19364885), (5425, 3872977)]