20980275

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14723}}^1$

素因数の和:14755

約数の個数: 24

約数和(自身を含む): 36515520

約数和(自身を除く): 15535245

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14723, 44169, 73615, 220845, 279737, 368075, 839211, 1104225, 1398685, 4196055, 6993425, 20980275]

約数ペア:

[(1, 20980275), (3, 6993425), (5, 4196055), (15, 1398685), (19, 1104225), (25, 839211), (57, 368075), (75, 279737), (95, 220845), (285, 73615), (475, 44169), (1425, 14723)]