81021375

素因数分解:

$3^2\times 5^3\times {\mathrm{72019}}^1$

素因数の和:72040

約数の個数: 24

約数和(自身を含む): 146056560

約数和(自身を除く): 65035185

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 72019, 216057, 360095, 648171, 1080285, 1800475, 3240855, 5401425, 9002375, 16204275, 27007125, 81021375]

約数ペア:

[(1, 81021375), (3, 27007125), (5, 16204275), (9, 9002375), (15, 5401425), (25, 3240855), (45, 1800475), (75, 1080285), (125, 648171), (225, 360095), (375, 216057), (1125, 72019)]