19987125

素因数分解:

$3^1\times 5^3\times {\mathrm{53299}}^1$

素因数の和:53317

約数の個数: 16

約数和(自身を含む): 33259200

約数和(自身を除く): 13272075

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 53299, 159897, 266495, 799485, 1332475, 3997425, 6662375, 19987125]

約数ペア:

[(1, 19987125), (3, 6662375), (5, 3997425), (15, 1332475), (25, 799485), (75, 266495), (125, 159897), (375, 53299)]