21108525

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14813}}^1$

素因数の和:14845

約数の個数: 24

約数和(自身を含む): 36738720

約数和(自身を除く): 15630195

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14813, 44439, 74065, 222195, 281447, 370325, 844341, 1110975, 1407235, 4221705, 7036175, 21108525]

約数ペア:

[(1, 21108525), (3, 7036175), (5, 4221705), (15, 1407235), (19, 1110975), (25, 844341), (57, 370325), (75, 281447), (95, 222195), (285, 74065), (475, 44439), (1425, 14813)]