21450625

素因数分解:

$5^4\times 7^1\times {\mathrm{4903}}^1$

素因数の和:4930

約数の個数: 20

約数和(自身を含む): 30640192

約数和(自身を除く): 9189567

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 4903, 24515, 34321, 122575, 171605, 612875, 858025, 3064375, 4290125, 21450625]

約数ペア:

[(1, 21450625), (5, 4290125), (7, 3064375), (25, 858025), (35, 612875), (125, 171605), (175, 122575), (625, 34321), (875, 24515), (4375, 4903)]