21000225

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14737}}^1$

素因数の和:14769

約数の個数: 24

約数和(自身を含む): 36550240

約数和(自身を除く): 15550015

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14737, 44211, 73685, 221055, 280003, 368425, 840009, 1105275, 1400015, 4200045, 7000075, 21000225]

約数ペア:

[(1, 21000225), (3, 7000075), (5, 4200045), (15, 1400015), (19, 1105275), (25, 840009), (57, 368425), (75, 280003), (95, 221055), (285, 73685), (475, 44211), (1425, 14737)]