20395575

素因数分解:

$3^2\times 5^2\times {\mathrm{90647}}^1$

素因数の和:90663

約数の個数: 18

約数和(自身を含む): 36531144

約数和(自身を除く): 16135569

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 90647, 271941, 453235, 815823, 1359705, 2266175, 4079115, 6798525, 20395575]

約数ペア:

[(1, 20395575), (3, 6798525), (5, 4079115), (9, 2266175), (15, 1359705), (25, 815823), (45, 453235), (75, 271941), (225, 90647)]