19980375

素因数分解:

$3^1\times 5^3\times {\mathrm{53281}}^1$

素因数の和:53299

約数の個数: 16

約数和(自身を含む): 33247968

約数和(自身を除く): 13267593

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 53281, 159843, 266405, 799215, 1332025, 3996075, 6660125, 19980375]

約数ペア:

[(1, 19980375), (3, 6660125), (5, 3996075), (15, 1332025), (25, 799215), (75, 266405), (125, 159843), (375, 53281)]