15851875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{1951}}^1$

素因数の和:1984

約数の個数: 20

約数和(自身を含む): 21343168

約数和(自身を除く): 5491293

約数列:

[1, 5, 13, 25, 65, 125, 325, 625, 1625, 1951, 8125, 9755, 25363, 48775, 126815, 243875, 634075, 1219375, 3170375, 15851875]

約数ペア:

[(1, 15851875), (5, 3170375), (13, 1219375), (25, 634075), (65, 243875), (125, 126815), (325, 48775), (625, 25363), (1625, 9755), (1951, 8125)]