20219625

素因数分解:

$3^4\times 5^3\times {\mathrm{1997}}^1$

素因数の和:2024

約数の個数: 40

約数和(自身を含む): 37714248

約数和(自身を除く): 17494623

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 1997, 2025, 3375, 5991, 9985, 10125, 17973, 29955, 49925, 53919, 89865, 149775, 161757, 249625, 269595, 449325, 748875, 808785, 1347975, 2246625, 4043925, 6739875, 20219625]

約数ペア:

[(1, 20219625), (3, 6739875), (5, 4043925), (9, 2246625), (15, 1347975), (25, 808785), (27, 748875), (45, 449325), (75, 269595), (81, 249625), (125, 161757), (135, 149775), (225, 89865), (375, 53919), (405, 49925), (675, 29955), (1125, 17973), (1997, 10125), (2025, 9985), (3375, 5991)]