21288075

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14939}}^1$

素因数の和:14971

約数の個数: 24

約数和(自身を含む): 37051200

約数和(自身を除く): 15763125

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14939, 44817, 74695, 224085, 283841, 373475, 851523, 1120425, 1419205, 4257615, 7096025, 21288075]

約数ペア:

[(1, 21288075), (3, 7096025), (5, 4257615), (15, 1419205), (19, 1120425), (25, 851523), (57, 373475), (75, 283841), (95, 224085), (285, 74695), (475, 44817), (1425, 14939)]