20159925

素因数分解:

$3^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{691}}^1$

素因数の和:1093

約数の個数: 24

約数和(自身を含む): 33465120

約数和(自身を除く): 13305195

約数列:

[1, 3, 5, 15, 25, 75, 389, 691, 1167, 1945, 2073, 3455, 5835, 9725, 10365, 17275, 29175, 51825, 268799, 806397, 1343995, 4031985, 6719975, 20159925]

約数ペア:

[(1, 20159925), (3, 6719975), (5, 4031985), (15, 1343995), (25, 806397), (75, 268799), (389, 51825), (691, 29175), (1167, 17275), (1945, 10365), (2073, 9725), (3455, 5835)]