661875

素因数分解:

$3^1\times 5^4\times {\mathrm{353}}^1$

素因数の和:376

約数の個数: 20

約数和(自身を含む): 1105896

約数和(自身を除く): 444021

約数列:

[1, 3, 5, 15, 25, 75, 125, 353, 375, 625, 1059, 1765, 1875, 5295, 8825, 26475, 44125, 132375, 220625, 661875]

約数ペア:

[(1, 661875), (3, 220625), (5, 132375), (15, 44125), (25, 26475), (75, 8825), (125, 5295), (353, 1875), (375, 1765), (625, 1059)]