20729375

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{1951}}^1$

素因数の和:1988

約数の個数: 20

約数和(自身を含む): 27441216

約数和(自身を除く): 6711841

約数列:

[1, 5, 17, 25, 85, 125, 425, 625, 1951, 2125, 9755, 10625, 33167, 48775, 165835, 243875, 829175, 1219375, 4145875, 20729375]

約数ペア:

[(1, 20729375), (5, 4145875), (17, 1219375), (25, 829175), (85, 243875), (125, 165835), (425, 48775), (625, 33167), (1951, 10625), (2125, 9755)]