21489125

素因数分解:

$5^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{599}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 31449600

約数和(自身を除く): 9960475

約数列:

[1, 5, 7, 25, 35, 41, 125, 175, 205, 287, 599, 875, 1025, 1435, 2995, 4193, 5125, 7175, 14975, 20965, 24559, 35875, 74875, 104825, 122795, 171913, 524125, 613975, 859565, 3069875, 4297825, 21489125]

約数ペア:

[(1, 21489125), (5, 4297825), (7, 3069875), (25, 859565), (35, 613975), (41, 524125), (125, 171913), (175, 122795), (205, 104825), (287, 74875), (599, 35875), (875, 24559), (1025, 20965), (1435, 14975), (2995, 7175), (4193, 5125)]